chore(ci): pin cicd-workflows reusable workflows to commit SHA

Author: AlexanderLanin

.github/workflows/copyright.yml

@@ -19,6 +19,6 @@ on:
     types: [checks_requested]
 jobs:
   copyright-check:
-    uses: eclipse-score/cicd-workflows/.github/workflows/copyright.yml@main
+    uses: eclipse-score/cicd-workflows/.github/workflows/copyright.yml@c1c90b1a82a1fab0fc202979dde6686b2162d5a8
     with:
       bazel-target: "run //:copyright.check"