fix: migrate to external linting, as 'molecule lint' isn't supported anymore

.gitlab-ci.yml

@@ -28,7 +28,11 @@ test-job:
     - git clone https://gitlab+deploy-token-25:${VAULT_ACCESS_TOKEN}@git.slub-dresden.de/slub-referat-2-3/ansible_vaults.git ../ansible_vaults/; \
     # run Molecule tests
     - molecule syntax --scenario-name default
-    - molecule lint --scenario-name default
+    # We cannot use `molecule lint` anymore because:
+    # - https://github.com/ansible-community/molecule/pull/3802 "Remove lint command"
+    # - https://github.com/ansible-community/molecule/discussions/3825#discussioncomment-4908366
+    - yamllint --strict --format colored ./
+    - ansible-lint --format full --profile production --strict --force-color ./
     - molecule create --scenario-name default
     - molecule converge --scenario-name default
     - molecule idempotence --scenario-name default