ci: Extend commitlint configuration with conventional commits

There was an issue that the exclamation mark wasn't parsed properly.
For example, the commit message "feat!: Test" was declined, but is valid.

.commitlintrc.yml

@@ -15,3 +15,5 @@ rules:
       always,
       [build, chore, ci, docs, feat, fix, merge, perf, refactor, revert, test],
     ]
+extends:
+  - '@commitlint/config-conventional'

.github/workflows/commits.yml

@@ -15,7 +15,7 @@ jobs:
         with:
           fetch-depth: 0
       - name: Install commitlint
-        run: npm install -g @commitlint/cli
+        run: npm install -g @commitlint/cli @commitlint/config-conventional
       - name: Validate commit messages
         id: conventional-commits
         env:

.pre-commit-config.yaml

@@ -158,6 +158,8 @@ repos:
     hooks:
       - id: commitlint
         stages: [commit-msg]
+        additional_dependencies:
+          - '@commitlint/config-conventional'
   - repo: https://github.com/asottile/pyupgrade
     rev: v3.15.0
     hooks: