Optimize CI integration test matrix for better parallelization (#6385)

Author: Copilot

.github/workflows/ci.yml

@@ -104,8 +104,17 @@ jobs:
           - name: "Workflow Rendering & Bundling"
             packages: "./pkg/workflow"
             pattern: "Render|Bundle|Script|WritePromptText"
-          - name: "CMD & Other Workflow Tests"
-            packages: "./pkg/workflow ./cmd/gh-aw"
+          - name: "Workflow Cache & Actions"
+            packages: "./pkg/workflow"
+            pattern: "Cache|Action|Container"
+          - name: "Workflow Dependabot & Security"
+            packages: "./pkg/workflow"
+            pattern: "Dependabot|Security|PII"
+          - name: "CMD Tests"  # All cmd/gh-aw integration tests
+            packages: "./cmd/gh-aw"
+            pattern: ""
+          - name: "Workflow Misc"  # Remaining workflow tests not matched by other patterns
+            packages: "./pkg/workflow"
             pattern: ""
     concurrency:
       group: ci-${{ github.ref }}-integration-${{ matrix.test-group.name }}