chore(deps): update commitlint/commitlint docker tag to v21 (#147)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [commitlint/commitlint](https://github.com/conventional-changelog/commitlint) | container | major | `20.5.3` → `21.0.1` |

---

### Release Notes

<details>
<summary>conventional-changelog/commitlint (commitlint/commitlint)</summary>

### [`v21.0.1`](https://github.com/conventional-changelog/commitlint/blob/HEAD/CHANGELOG.md#2101-2026-05-12)

[Compare Source](https://github.com/conventional-changelog/commitlint/compare/v21.0.0...v21.0.1)

##### Bug Fixes

- **load:** only resolve relative formatter paths ([#&#8203;4761](https://github.com/conventional-changelog/commitlint/issues/4761)) ([f8be069](https://github.com/conventional-changelog/commitlint/commit/f8be0698ff20b211d21d6d7fde7920512cd42845))
- **types:** add presetConfig to ParserPreset interface ([#&#8203;4749](https://github.com/conventional-changelog/commitlint/issues/4749)) ([e402cd4](https://github.com/conventional-changelog/commitlint/commit/e402cd415ec820c683ea934c24386c5191966ac4)), closes [#&#8203;4748](https://github.com/conventional-changelog/commitlint/issues/4748)

### [`v21.0.0`](https://github.com/conventional-changelog/commitlint/blob/HEAD/CHANGELOG.md#2100-2026-05-08)

[Compare Source](https://github.com/conventional-changelog/commitlint/compare/v20.5.3...v21.0.0)

##### Bug Fixes

- widen cz-commitlint inquirer peer dep to support v9-v12 [#&#8203;4554](https://github.com/conventional-changelog/commitlint/issues/4554) ([#&#8203;4682](https://github.com/conventional-changelog/commitlint/issues/4682)) ([341f0c4](https://github.com/conventional-changelog/commitlint/commit/341f0c4770040773e756715fb5f9570427e1fcd1))

- chore!: minimum node version v22 ([#&#8203;4679](https://github.com/conventional-changelog/commitlint/issues/4679)) ([ac2b3f4](https://github.com/conventional-changelog/commitlint/commit/ac2b3f4a947670e46af9a738881ba14158f0987a)), closes [#&#8203;4679](https://github.com/conventional-changelog/commitlint/issues/4679)

##### BREAKING CHANGES

- drop node v18 and v20 support

* Bump engines to >=v22 in all 39 package.json files
* Update [@&#8203;types/node](https://github.com/types/node) to ^22.0.0
* Update CI matrix to \[22, 24]
* Update Ubuntu baseline job to ubuntu:26.04
* Update Dockerfile.ci, .mise.toml, .codesandbox/ci.json
* Update pre-commit hook to use --ignore-engines
* Update README and docs

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

#### [20.5.3](https://github.com/conventional-changelog/commitlint/compare/v20.5.2...v20.5.3) (2026-04-30)

**Note:** Version bump only for package [@&#8203;commitlint/root](https://github.com/commitlint/root)

#### [20.5.2](https://github.com/conventional-changelog/commitlint/compare/v20.5.1...v20.5.2) (2026-04-25)

##### Bug Fixes

- update dependency global-directory to v5 ([#&#8203;4698](https://github.com/conventional-changelog/commitlint/issues/4698)) ([a8b6224](https://github.com/conventional-changelog/commitlint/commit/a8b622497b5ac1bb8d56791a678cc03021b5ade8))

#### [20.5.1](https://github.com/conventional-changelog/commitlint/compare/v20.5.0...v20.5.1) (2026-03-31)

##### Bug Fixes

- **cz-commitlint:** add VS16 to single character emojis ([#&#8203;4666](https://github.com/conventional-changelog/commitlint/issues/4666)) ([9e3e2d3](https://github.com/conventional-changelog/commitlint/commit/9e3e2d3ebffbc4c2fb60ead37946ede02d2b1381))
- **cz-commitlint:** handle modifiers correctly ([#&#8203;4667](https://github.com/conventional-changelog/commitlint/issues/4667)) ([5a3ebf5](https://github.com/conventional-changelog/commitlint/commit/5a3ebf5fc687db4af39a2e82d1a631af91fee29d))
- update dependency global-directory to v5 ([#&#8203;4671](https://github.com/conventional-changelog/commitlint/issues/4671)) ([a300d32](https://github.com/conventional-changelog/commitlint/commit/a300d32eb4cc9a0702b59952a06d2cf31e2faafe))

##### Reverts

- Revert "fix: update dependency global-directory to v5 ([#&#8203;4671](https://github.com/conventional-changelog/commitlint/issues/4671))" ([#&#8203;4677](https://github.com/conventional-changelog/commitlint/issues/4677)) ([0f124c9](https://github.com/conventional-changelog/commitlint/commit/0f124c9700443fb7145b4746883ec2124f7534a4)), closes [#&#8203;4671](https://github.com/conventional-changelog/commitlint/issues/4671) [#&#8203;4677](https://github.com/conventional-changelog/commitlint/issues/4677)

</details>

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Reviewed-on: https://gitea.com/gitea/helm-actions/pulls/147
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.gitea/workflows/commitlint.yml

@@ -11,7 +11,7 @@ on:
 jobs:
   check-and-test:
     runs-on: ubuntu-latest
-    container: commitlint/commitlint:20.5.3
+    container: commitlint/commitlint:21.0.1
     steps:
       - uses: actions/checkout@v6
       - name: check PR title