[Internal] Add workflow to validate NEXT_CHANGELO.go updates

.github/workflows/next-changelog.yml

@@ -0,0 +1,28 @@
+name: Check for NEXT_CHANGELOG.go Changes
+
+on:
+  pull_request: # Trigger on pull request events
+
+jobs:
+  check-next-changelog:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: List all changed files in the PR
+        id: changed-files
+        run: |
+          # Get the list of changed files in the entire PR
+          echo "files=$(jq -r '.pull_request.files[].filename' < "${{ github.event_path }}")" >> $GITHUB_ENV
+
+      - name: Verify NEXT_CHANGELOG.go was modified
+        run: |
+          # Check if NEXT_CHANGELOG.go exists in the list of changed files
+          echo "$GITHUB_ENV"
+          if [[ ! "$files" =~ NEXT_CHANGELOG\.go ]]; then
+            echo "WARNING: file NEXT_CHANGELOG.go not modified in this PR.\
+            This is just a reminder and does not block the PR from merging."
+            exit 1
+          fi