assign the team to dependabot updates (#300)

.github/workflows/weekly_dependency_update.yml

@@ -0,0 +1,22 @@
+name: Assign weekly release dependabot reviewer
+on:
+  pull_request:
+    branches:
+      - "dependabot/*"
+    types:
+      - opened
+      - ready_for_review
+
+permissions:
+  pull-requests: write
+
+jobs:
+  assign:
+    runs-on: ubuntu-latest
+    steps:
+      - name: assign dependency updates team to pull request
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          url: ${{ github.event.pull_request.html_url }}
+        run: |
+          gh pr edit "$url" --add-reviewer fiberplane/cli-devs-dependency-updates