python-build: build an :all bottle

[carlocab]

• Have you followed the guidelines for contributing?
• Have you ensured that your commits follow the commit style guide?
• Have you checked that there aren't other open pull requests for the same formula update/change?
• Have you built your formula locally with HOMEBREW_NO_INSTALL_FROM_API=1 brew install --build-from-source <formula>, where <formula> is the name of the formula you're submitting?
• Is your test running fine brew test <formula>, where <formula> is the name of the formula you're submitting?
• Does your build pass brew audit --strict <formula> (after doing HOMEBREW_NO_INSTALL_FROM_API=1 brew install --build-from-source <formula>)? If this is a new formula, does it pass brew audit --new <formula>?

---

There's a stray /usr/local in a code comment. Let's just replace that
with HOMEBREW_PREFIX so our bottles are the same across os versions.

[carlocab]

Checksums match ✅

3af731d79dae765ec4189d4b411ef8f86b20fe27ff997e99a2870a156459beab
3af731d79dae765ec4189d4b411ef8f86b20fe27ff997e99a2870a156459beab
3af731d79dae765ec4189d4b411ef8f86b20fe27ff997e99a2870a156459beab
3af731d79dae765ec4189d4b411ef8f86b20fe27ff997e99a2870a156459beab
3af731d79dae765ec4189d4b411ef8f86b20fe27ff997e99a2870a156459beab
3af731d79dae765ec4189d4b411ef8f86b20fe27ff997e99a2870a156459beab

[p-linnane]

Nice

[github-actions]

🤖 An automated task has requested bottles to be published to this PR.