PYTHON-5611 Fix python binary usage for Other Hosts

[blink1073]

Issue Key

Summary

Fix the python binary used in the Other Hosts tasks.

Changes in this PR

Limit the manual setting of the 3.11 python binary to the FIPS host.

Testing Plan

Passing build with all of the Other Hosts tests: https://spruce.mongodb.com/version/68e68729d8197f0007dcf1f4/tasks?sorts=STATUS%3AASC%3BBASE_STATUS%3ADESC

Screenshots (optional)

N/A

Checklist

Checklist for Author

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

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)

[sleepyStick]

LGTM