python_stdlib: update for 3.14

[Rogdham]

Summary

Added version 3.14 to the script generating the known_stdlib.rs file.

Rebuilt the known stdlibs with latest version (2025.5.10) of stdlibs Python lib (which added support for 3.14.0b1).

Note: Python 3.14 is now in feature freeze so the modules in stdlib should be stable.

See also: #15506

Test Plan

The following command has been run. Using for tests the compression module which been introduced with Python 3.14.

ruff check --no-cache --select I001 --target-version py314 --fix

With ruff 0.11.9:

import base64
import datetime

import compression

print(base64, compression, datetime)

With this PR:

import base64
import compression
import datetime   

print(base64, compression, datetime)

[github-actions]

ruff-ecosystem results

Linter (stable)

✅ ecosystem check detected no linter changes.

Linter (preview)

✅ ecosystem check detected no linter changes.

Formatter (stable)

ℹ️ ecosystem check encountered format errors. (no format changes; 1 project error)

openai/openai-cookbook (error)

warning: Detected debug build without --no-cache.
error: Failed to read examples/gpt4-1_prompting_guide.ipynb: Expected a Jupyter Notebook, which must be internally stored as JSON, but this file isn't valid JSON: expected `,` or `]` at line 580 column 29

Formatter (preview)

ℹ️ ecosystem check encountered format errors. (no format changes; 1 project error)

openai/openai-cookbook (error)

ruff format --preview

warning: Detected debug build without --no-cache.
error: Failed to read examples/gpt4-1_prompting_guide.ipynb: Expected a Jupyter Notebook, which must be internally stored as JSON, but this file isn't valid JSON: expected `,` or `]` at line 580 column 29

[dylwil3]

Fantastic, thank you!