PYTHON-5565 Add minimum version test for Encryption

[blink1073]

• Ensured lower bounds for all encryption deps. I chose certifi>=2023.7.22 due to GHSA-xqr8-7jwr-rhp7.
• I also had to add min deps for gevent and simplejson in order to avoid build errors. For gevent I chose the version that added Python 3.9 support from 2020. For simplejson I chose a version from 2019.
• Added a new --test-min-deps (TEST_MIN_DEPS) option that enables --resolution=lowest-direct. I brought in the env var override code from drivers-orchestration to minimize adding more ad-hoc environment var handling.
• Added instructions for running tests with min dependencies
• Added tasks for all topologies to use min deps with the lowest supported CPython
• Adds 6 new tasks for encryption on Linux. I could not test on Windows yet until we have the rest of the min dependencies due to a uv error.

Passing build: https://spruce.mongodb.com/version/68cd41981bd9fc0007b7a193/tasks?sorts=STATUS%3AASC%3BBASE_STATUS%3ADESC