Update supported Python versions in documentation

[berndverst]

Python 3.9 is end of life
Add support for Python 3.14

[prmerger-automator]

@berndverst : Thanks for your contribution! The author(s) and reviewer(s) have been notified to review your proposed change.

[learn-build-service-prod]

Learn Build status updates of commit 6830598:

✅ Validation status: passed

File	Status	Preview URL	Details
includes/functions-supported-languages.md	✅Succeeded

For more details, please refer to the build report.

[ggailey777]

#sign-off

[v-dirichards]

This PR is ready for merge. Due to the upcoming conference, all merging and publishing is on hold until the morning of the keynote address.

Any merges to the default branch before Tuesday, November 18th must go through the Ask Mode process.

The PR review team will resume merging on the morning of the keynote address for the regularly scheduled daily publish cycles. You don't need to take further action on this PR; we'll merge it on the day of the keynote address.

Don't add more commits to this reviewed PR. If you need to make additional changes to these files, email techdocprs for guidance about how to proceed.

#label:"event-triaged-to-10AM"

[ggailey777]

@berndvert heard from the Python PM that there's actually an issue currently blocking them from announcing 3.14 GA support. Due to the current Ignite content freeze, the holding of 3.14, and other PRs, I'm going to have to close your PR, but thanks for trying to help out. 👍 #please-close