[chore] Setup a job to run make update otel

.github/workflows/update-otel.yaml

@@ -0,0 +1,31 @@
+name: 'Update contrib to the latest core source'
+on:
+  workflow_dispatch:
+  pull_request: # TODO: remove before merging
+  schedule:
+    - cron: "27 21 * * *" # Run at an arbitrary time on weekdays.
+
+# TODO: Skip if there is no new commits in the core source.
+jobs:
+  update-otel:
+    runs-on: ubuntu-24.04
+    if: github.repository_owner == 'open-telemetry'
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/checkout@v4
+        with:
+          path: ../opentelemetry-collector
+          repository: open-telemetry/opentelemetry-collector
+      - name: Setup Git user
+        run: |
+          git config user.name opentelemetrybot
+          git config user.email [email protected]
+      - name: Setup Git user
+        run: make update-otel
+      - name: Create pull request against main
+        uses: peter-evans/create-pull-request@v7
+        with:
+          branch: opentelemetrybot/update-otel
+          token: ${{ secrets.OPENTELEMETRYBOT_GITHUB_TOKEN }}
+          commit-message: Update to latest opentelemetry-collector release.
+          title: "[chore] Update to latest opentelemetry-collector"