RFE: please provide support for latest `urllib3`

https://github.com/psf/requests/blob/1e62a3ec18e19f85ddae03b4cbbdf0b4c62834c0/setup.cfg#L6-L10


Just tested build with below patch:
```patch
--- a/setup.py
+++ b/setup.py
@@ -59,9 +59,9 @@
     sys.exit()

 requires = [
-    "charset_normalizer>=2,<3",
-    "idna>=2.5,<4",
-    "urllib3>=1.21.1,<1.27",
+    "charset_normalizer>=2",
+    "idna>=2.5",
+    "urllib3>=1.21.1",
 ]
 test_requirements = [
     "pytest-httpbin==0.0.7",
--- a/requests/__init__.py
+++ b/requests/__init__.py
@@ -54,66 +54,6 @@
 except ImportError:
     chardet_version = None

-
-def check_compatibility(urllib3_version, chardet_version, charset_normalizer_version):
-    urllib3_version = urllib3_version.split(".")
-    assert urllib3_version != ["dev"]  # Verify urllib3 isn't installed from git.
-
-    # Sometimes, urllib3 only reports its version as 16.1.
-    if len(urllib3_version) == 2:
-        urllib3_version.append("0")
-
-    # Check urllib3 for compatibility.
-    major, minor, patch = urllib3_version  # noqa: F811
-    major, minor, patch = int(major), int(minor), int(patch)
-    # urllib3 >= 1.21.1, <= 1.26
-    assert major == 1
-    assert minor >= 21
-    assert minor <= 26
-
-    # Check charset_normalizer for compatibility.
-    if chardet_version:
-        major, minor, patch = chardet_version.split(".")[:3]
-        major, minor, patch = int(major), int(minor), int(patch)
-        # chardet_version >= 3.0.2, < 6.0.0
-        assert (3, 0, 2) <= (major, minor, patch) < (6, 0, 0)
-    elif charset_normalizer_version:
-        major, minor, patch = charset_normalizer_version.split(".")[:3]
-        major, minor, patch = int(major), int(minor), int(patch)
-        # charset_normalizer >= 2.0.0 < 3.0.0
-        assert (2, 0, 0) <= (major, minor, patch) < (3, 0, 0)
-    else:
-        raise Exception("You need either charset_normalizer or chardet installed")
-
-
-def _check_cryptography(cryptography_version):
-    # cryptography < 1.3.4
-    try:
-        cryptography_version = list(map(int, cryptography_version.split(".")))
-    except ValueError:
-        return
-
-    if cryptography_version < [1, 3, 4]:
-        warning = "Old version of cryptography ({}) may cause slowdown.".format(
-            cryptography_version
-        )
-        warnings.warn(warning, RequestsDependencyWarning)
-
-
-# Check imported dependencies for compatibility.
-try:
-    check_compatibility(
-        urllib3.__version__, chardet_version, charset_normalizer_version
-    )
-except (AssertionError, ValueError):
-    warnings.warn(
-        "urllib3 ({}) or chardet ({})/charset_normalizer ({}) doesn't match a supported "
-        "version!".format(
-            urllib3.__version__, chardet_version, charset_normalizer_version
-        ),
-        RequestsDependencyWarning,
-    )
-
 # Attempt to enable urllib3's fallback for SNI support
 # if the standard library doesn't support SNI or the
 # 'ssl' library isn't available.
@@ -128,10 +68,6 @@

         pyopenssl.inject_into_urllib3()

-        # Check cryptography version
-        from cryptography import __version__ as cryptography_version
-
-        _check_cryptography(cryptography_version)
 except ImportError:
     pass

```
and looks like pytest is passing without aany problems
```console
+ PYTHONPATH=/home/tkloczko/rpmbuild/BUILDROOT/python-requests-2.28.1-4.fc35.x86_64/usr/lib64/python3.8/site-packages:/home/tkloczko/rpmbuild/BUILDROOT/python-requests-2.28.1-4.fc35.x86_64/usr/lib/python3.8/site-packages
+ /usr/bin/pytest -ra tests
=========================================================================== test session starts ============================================================================
platform linux -- Python 3.8.15, pytest-7.1.3, pluggy-1.0.0
rootdir: /home/tkloczko/rpmbuild/BUILD/requests-2.28.1, configfile: pyproject.toml
plugins: mock-3.10.0, httpbin-1.0.2
collected 593 items

tests/test_help.py ...                                                                                                                                               [  0%]
tests/test_hooks.py ...                                                                                                                                              [  1%]
tests/test_lowlevel.py ....................                                                                                                                          [  4%]
tests/test_packages.py ...                                                                                                                                           [  4%]
tests/test_requests.py ...................................127.0.0.1 - - [07/Nov/2022 16:15:04] "GET /relative-redirect/20 HTTP/1.1" 302 0
.............................................................127.0.0.1 - - [07/Nov/2022 16:15:10] "GET /status/404 HTTP/1.1" 404 0
.......................pytest-httpbin server hit an exception serving request: [SSL: TLSV1_ALERT_UNKNOWN_CA] tlsv1 alert unknown ca (_ssl.c:1131)
attempting to ignore so the rest of the tests can run
...................... [ 28%]
......................................................................127.0.0.1 - - [07/Nov/2022 16:15:11] "GET /get HTTP/1.1" 200 222
................x............................................................................. [ 56%]
.............                                                                                                                                                        [ 58%]
tests/test_structures.py ....................                                                                                                                        [ 61%]
tests/test_testserver.py ......s....                                                                                                                                 [ 63%]
tests/test_utils.py ..s............................................................................................................................................. [ 88%]
.......................................................sssssssssss.....                                                                                              [100%]

========================================================================= short test summary info ==========================================================================
SKIPPED [1] tests/test_testserver.py:94: this fails non-deterministically under pytest-xdist
SKIPPED [1] tests/test_utils.py:49: condition: cStringIO is None
SKIPPED [10] tests/test_utils.py:814: Test only on Windows
SKIPPED [1] tests/test_utils.py:867: Test only on Windows
XFAIL tests/test_requests.py::TestRequests::test_response_iter_lines_reentrant
========================================================== 579 passed, 13 skipped, 1 xfailed in 76.39s (0:01:16) ===========================================================
```

This is unrelated to urllib3. Resolving as duplicate of your other ticket: #6272.

Issue is as well that module initialisation should not contain such checks.