chore(tooling): enforce ruff rule c420

[felix314159]

🗒️ Description

Rule C420 is unnecessary-dict-comprehension-for-iterable (C420).

The 18 errors are only visible in newer ruff versions (e.g. 0.9.6 will show 0 errors, but 0.11.8 will show 18 errors). To use the same ruff version that tox will use in CI run
.tox/lint/bin/ruff check --no-fix --show-fixes src tests .github/scripts.
Ruff was able to autofix everything with
.tox/lint/bin/ruff check --fix --show-fixes src tests .github/scripts,
I re-ran mypy after that and there are no complaints. Should be safe to merge.

Relevant for #2128

🔗 Related Issues or PRs

N/A.

✅ Checklist

• All: Ran fast tox checks to avoid unnecessary CI fails, see also Code Standards and Enabling Pre-commit Checks:

  uvx --with=tox-uv tox -e lint,typecheck,spellcheck,markdownlint

• All: PR title adheres to the repo standard - it will be used as the squash commit message and should start type(scope):.
• All: Considered adding an entry to CHANGELOG.md.
• All: Considered updating the online docs in the ./docs/ directory.
• All: Set appropriate labels for the changes (only maintainers can apply labels).

[spencer-tb]

Works for me locally! LGTM! 🍃 "cough 420" 🌿

[spencer-tb]

cc @danceratopz for second opinion and merge! :D

[danceratopz]

Thanks @felix314159! I'd prefer to keep the hex representations as they're shorter & easier to read. In particular, the decimal representation of 0xDEADBEEF makes the choice unclear.