ci: perform sample and example app tests on regression schedules (#2743)

Author: zimeg

.github/workflows/samples.yml

@@ -6,6 +6,9 @@ on:
     branches:
       - main
   pull_request:
+  schedule:
+    - cron: "0 0 * * *"
+  workflow_dispatch:
 
 jobs:
   examples:
@@ -71,3 +74,20 @@ jobs:
       - name: Compile sample
         working-directory: ./sample
         run: npx tsc
+  notifications:
+    name: Regression notifications
+    runs-on: ubuntu-latest
+    needs:
+      - examples
+      - samples
+    if: ${{ !success() && github.ref == 'refs/heads/main' && github.event_name != 'workflow_dispatch' }}
+    steps:
+      - name: Send notifications of failing tests
+        uses: slackapi/slack-github-action@91efab103c0de0a537f72a35f6b8cda0ee76bf0a # v2.1.1
+        with:
+          errors: true
+          webhook: ${{ secrets.SLACK_REGRESSION_FAILURES_WEBHOOK_URL }}
+          webhook-type: webhook-trigger
+          payload: |
+            action_url: "${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}"
+            repository: "${{ github.repository }}"