ci(dep): bump @commitlint/config-conventional from 20.2.0 to 20.3.0

Bumps [@commitlint/config-conventional](https://github.com/conventional-changelog/commitlint/tree/HEAD/@commitlint/config-conventional) from 20.2.0 to 20.3.0.
- [Release notes](https://github.com/conventional-changelog/commitlint/releases)
- [Changelog](https://github.com/conventional-changelog/commitlint/blob/master/@commitlint/config-conventional/CHANGELOG.md)
- [Commits](https://github.com/conventional-changelog/commitlint/commits/v20.3.0/@commitlint/config-conventional)

---
updated-dependencies:
- dependency-name: "@commitlint/config-conventional"
  dependency-version: 20.3.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

package-lock.json

@@ -17,6 +17,6 @@
   },
   "homepage": "https://github.com/TheRealWaldo/ha-optimal-humidity#readme",
   "devDependencies": {
-    "@commitlint/config-conventional": "^20.2.0"
+    "@commitlint/config-conventional": "^20.3.0"
   }
 }