Update Requests library 2.3.0 to 2.4.3 (9dc6602).
Reapply check that SSLv3 is available before use that is listed in hacks.txt to new lib.

This fixes an issue in the urllib3/PyOpenSSL contrib in requests lib that assumes ssl.protocol_sslv3 is always defined. Many systems have disabled this protocol in light of recent security issues.
Change suppress HTTPS verification InsecureRequestWarnings.

Suppress these potentially confusing warnings because many sites use self-certified certificates.

Change a couple of lib references to be full paths.