[Task] PYTHON-5561: Add support for PyPy 3.11

[NoahStapp]

PYTHON-5561

Summary

Replaces PyPy 3.10 with PyPy 3.11 in our test suite.

Changes in this PR

See above.

Testing Plan

Infrastructure change, run of all PyPy tasks: https://spruce.mongodb.com/version/68f794f05b986700076b64de/tasks?sorts=STATUS%3AASC%3BBASE_STATUS%3ADESC.

Screenshots (optional)

N/A

Checklist

Checklist for Author

• Did you update the changelog (if necessary)?
• Is the intention of the code captured in relevant tests?
• If there are new TODOs, has a related JIRA ticket been created?

Checklist for Reviewer {@primary_reviewer}

• Does the title of the PR reference a JIRA Ticket?
• Do you fully understand the implementation? (Would you be comfortable explaining how this code works to someone else?)
• Have you checked for spelling & grammar errors?
• Is all relevant documentation (README or docstring) updated?

Focus Areas for Reviewer (optional)

N/A.

[sleepyStick]

LGTM!