Fix copilot setup steps

Author: trask

.github/workflows/copilot-setup-steps.yml

@@ -38,3 +38,6 @@ jobs:
 
       - name: Populate Gradle caches
         run: ./gradlew classes testClasses assemble spotlessApply
+        # Allow this step to fail without failing the workflow, since build failures
+        # shouldn't prevent Copilot coding agent from starting up
+        continue-on-error: true