fix(service-project): Run the "Validate Runway manifest" job when the service...

fix(service-project): Run the "Validate Runway manifest" job when the service project's CI config changes.

This way the validation should run when services upgrade to a new Runway version.

See also: gitlab-org/modelops/applied-ml/code-suggestions/ai-assist!672

ci-tasks/service-project/impl.yml

@@ -38,8 +38,11 @@ stages:
     - cat runway.env
   rules:
     - if: $CI_PIPELINE_SOURCE == 'merge_request_event'
-      changes:
+      changes: &validate_changes
         - .runway/runway*.yml
+        - .gitlab-ci.yml
+        # Specific to AI Gateway
+        - ci/gitlab-com.yml
     - if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH
   artifacts:
     reports:
@@ -52,8 +55,7 @@ stages:
   stage: $[[ inputs.validate_stage ]]
   rules:
     - if: $CI_PIPELINE_SOURCE == 'merge_request_event'
-      changes:
-        - .runway/runway*.yml
+      changes: *validate_changes
     - if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH
   needs:
     - job: "🏗️ Construct Runway configuration"