[HttpFoundation] Add dev-dependency on Symfony Expression-Language for unit tests

This component is needed to test ExpressionRequestMatcher
minor #10445 [2.4][HttpFoundation] Add dev-dependency on Symfony Expression-Language for unit tests (romainneutron)

This PR was merged into the 2.4 branch.

Discussion
----------

[2.4][HttpFoundation] Add dev-dependency on Symfony Expression-Language for unit tests

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| License       | MIT

This component is needed to test ExpressionRequestMatcher.
This PR replaces #10440

Commits
-------

5d704d9 [HttpFoundation] Add dev-dependency on Symfony Expression-Language for unit tests