GHA: Copilot contributor check

See https://github.com/ScaCap/terraform/pull/13918/ for more details.

Author: PlatformEngineering

.github/workflows/copilot-check.yml

@@ -0,0 +1,11 @@
+on:
+  pull_request
+
+jobs:
+  check-contributors:
+    name: Check contributors
+    uses: scacap/infra.gh-actions/.github/workflows/copilot-contributor-check.yml@v1
+    secrets: inherit
+    with:
+      repository: ${{ github.repository }}
+      pull_request_number: ${{ github.event.pull_request.number }}