Replace term 'blacklist' with 'denylist'

[MaxRau]

Subject: Remove term blacklist from Sphinx repo

Feature or Bugfix

• Bugfix

Purpose

Many organizations (including my employer) have inclusive language policies. There are a few references to a commonly banned term, 'blacklist'. This PR removes those few references.

Detail

In some cases some organizations might limit or bar the use of Sphinx if automated checkers like Acrolinx find this term in files like doctools.js after sphinx documentation is generated.

Relates

[chrisjsewell]

great thanks, I did a search for "whitelist", and its only in .ruff.toml, so might also want to change that

EXTENSION_BLACKLIST, BLACKLISTED_KEY_CONTROL_ELEMENTS, are technically public API, so perhaps they have to be deprecated 🤔 (although I doubt anyone uses them)

see e.g.

sphinx/sphinx/util/typing.py

Line 421 in da4c6a7

# deprecated name -> (object to return, canonical path or empty string, removal version)

not sure how/if can do that for .js

[AA-Turner]

Thanks for the PR Max -- for now I'd prefer to avoid unneeded churn, though if Sphinx does start flag up on such an automated checker & it is unconfigurable, we can revisit this PR later.

A