chore(deps): update commitlint monorepo to v21 (#52)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.pre-commit-config.yaml

@@ -22,5 +22,5 @@ repos:
             stages: [commit-msg]
             language: node
             additional_dependencies:
-                - '@commitlint/cli@^20.0.0'
-                - '@commitlint/config-conventional@^20.0.0'
+                - '@commitlint/cli@^21.0.0'
+                - '@commitlint/config-conventional@^21.0.0'