Bump tox from 4.18.1 to 4.21.0

[dependabot[bot]]

Bumps tox from 4.18.1 to 4.21.0.

Changelog

Sourced from tox's changelog.

v4.21.0 (2024-09-30)

Features - 4.21.0

- Native TOML configuration support - by :user:`gaborbernat`. (:issue:`999`)
Improved Documentation - 4.21.0

• Update Loader docs - by :user:ziima (:issue:3352)

v4.20.0 (2024-09-18)

Features - 4.20.0

- Separate the list dependencies functionality to a separate abstract class allowing code reuse in plugins (such as
  ``tox-uv``) - by :gaborbernat`. (:issue:`3347`)
v4.19.0 (2024-09-17)
Features - 4.19.0

• Support pypy-<major>.<minor> environment names for PyPy environments - by :user:gaborbernat. (:issue:3346)

Commits

• 46bef9e release 4.21.0
• cea105b True TOML config support (#3353)
• a04b039 [pre-commit.ci] pre-commit autoupdate (#3385)
• f5eba31 Update Loader docs (#3352)
• 329db63 [pre-commit.ci] pre-commit autoupdate (#3350)
• f4b3bd2 Bump pypa/gh-action-pypi-publish from 1.10.1 to 1.10.2 (#3349)
• a04cc3a release 4.20.0
• 4d8f5fd Separate list dependencies to a separate installer class (#3347)
• 0cb816c YML to YAML
• 2f83624 release 4.19.0
• Additional commits viewable in compare view

Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting @dependabot rebase.

---

Dependabot commands and options

You can trigger Dependabot actions by commenting on this PR: - `@dependabot rebase` will rebase this PR - `@dependabot recreate` will recreate this PR, overwriting any edits that have been made to it - `@dependabot merge` will merge this PR after your CI passes on it - `@dependabot squash and merge` will squash and merge this PR after your CI passes on it - `@dependabot cancel merge` will cancel a previously requested merge and block automerging - `@dependabot reopen` will reopen this PR if it is closed - `@dependabot close` will close this PR and stop Dependabot recreating it. You can achieve the same result by closing it manually - `@dependabot show ignore conditions` will show all of the ignore conditions of the specified dependency - `@dependabot ignore this major version` will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself) - `@dependabot ignore this minor version` will close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself) - `@dependabot ignore this dependency` will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself)

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 87.78%. Comparing base (1c59ad5) to head (36e45d3). Report is 1 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #709 +/- ## ======================================= Coverage 87.78% 87.78% ======================================= Files 84 84 Lines 20721 20721 ======================================= Hits 18190 18190 Misses 2531 2531 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.