[GHA] Pin main branch workflow for indexer workflow (#8653) (#8661)

Co-authored-by: Balaji Arun <balaji@aptoslabs.com>

.github/workflows/docker-build-test.yaml

@@ -194,7 +194,20 @@ jobs:
         github.event.pull_request.auto_merge != null) ||
         contains(github.event.pull_request.body, '#e2e'
       )
-    uses: ./.github/workflows/cli-e2e-tests.yaml
+    uses: aptos-labs/aptos-core/.github/workflows/cli-e2e-tests.yaml@main
+    secrets: inherit
+    with:
+      GIT_SHA: ${{ needs.determine-docker-build-metadata.outputs.gitSha }}
+
+  indexer-grpc-e2e-tests:
+    needs: [permission-check, rust-images, determine-docker-build-metadata] # runs with the default release docker build variant "rust-images"
+    if: |
+      (github.event_name == 'push' && github.ref_name != 'main') ||
+      github.event_name == 'workflow_dispatch' ||
+      contains(github.event.pull_request.labels.*.name, 'CICD:run-e2e-tests') ||
+      github.event.pull_request.auto_merge != null ||
+      contains(github.event.pull_request.body, '#e2e')
+    uses: aptos-labs/aptos-core/.github/workflows/docker-indexer-grpc-test.yaml@main
     secrets: inherit
     with:
       GIT_SHA: ${{ needs.determine-docker-build-metadata.outputs.gitSha }}