Bump versions table in README

[hugovk]

By running python check_versions.py ../cpython/

Also update the requirements to fix:

❯ python check_versions.py ../cpython/
Traceback (most recent call last):
  File "/Users/hugo/github/docsbuild-scripts/check_versions.py", line 13, in <module>
    import build_docs
  File "/Users/hugo/github/docsbuild-scripts/build_docs.py", line 45, in <module>
    import zc.lockfile
ModuleNotFoundError: No module named 'zc'

[JulienPalard]

Wow this PR went too long without love :(

Can you remove the mentions of ## The github hook server in the README? It has been removed in the meantime and your PR is reintroducing it.

[hugovk]

I've updated from main and bumped the versions again.

It has been removed in the meantime and your PR is reintroducing it.

I can still see ## The github hook server in the README?

https://github.com/python/docsbuild-scripts#the-github-hook-serverx

This PR only fixes some typos in that section (Github -> GitHub).

[pradyunsg]

In #170, I've made a suggestion that would remove the need for README version bump PRs in the future, by throwing automation/CI at the problem.