Merge branch 'fix/commitlint-against-default-branch' into 'master'

ci(commitlint): master is not always the repository default branch

See merge request !6

templates/Lint/Commitlint.yaml

@@ -14,7 +14,7 @@ commitlint:
     - "git remote remove upstream"
   script:
     # Set default commit hashes for `--from` and `--to`
-    - 'export COMMITLINT_FROM="$(git merge-base upstream/master HEAD)"'
+    - 'export COMMITLINT_FROM="$(git merge-base upstream/${CI_DEFAULT_BRANCH} HEAD)"'
     - 'export COMMITLINT_TO="${CI_COMMIT_SHA}"'
     # Run `commitlint`
     - 'commitlint --from "${COMMITLINT_FROM}"