ci: Update add-paths for update-a2a-types (#178)

Author: holtskinner

.github/workflows/update-a2a-types.yml

@@ -80,13 +80,15 @@ jobs:
           token: ${{ secrets.A2A_BOT_PAT }}
           committer: "a2a-bot <a2a-bot@google.com>"
           author: "a2a-bot <a2a-bot@google.com>"
-          commit-message: "chore: Update A2A types from specification 🤖"
-          title: "chore: Update A2A types from specification 🤖"
+          commit-message: "feat: Update A2A types from specification 🤖"
+          title: "feat: Update A2A types from specification 🤖"
           body: |
             This PR updates `src/a2a/types.py` based on the latest `specification/json/a2a.json` from [google-a2a/A2A](https://github.com/google-a2a/A2A/commit/${{ github.event.client_payload.sha }}).
           branch: "auto-update-a2a-types-${{ github.event.client_payload.sha }}"
           base: main
           labels: |
             automated
             dependencies
-          add-paths: ${{ steps.vars.outputs.GENERATED_FILE }}
+          add-paths: |
+            ${{ steps.vars.outputs.GENERATED_FILE }}
+            src/a2a/grpc/