feat(CI): Automatically assign milestones to pull-requests (#13551)

.github/workflows/milestones.yml

@@ -0,0 +1,24 @@
+on:
+  pull_request:
+    types:
+      - closed
+
+jobs:
+  milestone_job:
+    if: github.event.pull_request.merged == true
+    runs-on: ubuntu-latest
+    name: Assign milestones to PRs
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+      - name: Assign milestone to PR
+        uses: srebhan/label-milestone-action@v1.0.0
+        id: assign-milestone
+        with:
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+          bugfix-labels: 'fix,chore,docs,dependencies'
+          minor-labels: 'feat'
+          major-labels: 'breaking change'
+          fallback: 'minor'
+      - name: Show milestone
+        run: echo "Assigned milestone is ${{ steps.assign-milestone.outputs.milestone }}"