👷(ci) add CI check for CHANGELOG updates in pull requests

Implement automated CI validation ensuring pull request authors
update CHANGELOG with their changes, preventing undocumented
changes from merging and maintaining accurate release
documentation for users and maintainers.

.github/workflows/meet.yml

@@ -34,6 +34,32 @@ jobs:
         if: always()
         run: ~/.local/bin/gitlint --commits origin/${{ github.event.pull_request.base.ref }}..HEAD
 
+  check-changelog:
+    runs-on: ubuntu-latest
+    if: |
+      contains(github.event.pull_request.labels.*.name, 'noChangeLog') == false &&
+      github.event_name == 'pull_request'
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 50
+      - name: Check that the CHANGELOG has been modified in the current branch
+        run: git diff --name-only ${{ github.event.pull_request.base.sha }} ${{ github.event.after }} | grep 'CHANGELOG.md'
+
+  lint-changelog:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - name: Check CHANGELOG max line length
+        run: |
+          max_line_length=$(cat CHANGELOG.md | grep -Ev "^\[.*\]: https://github.com" | wc -L)
+          if [ $max_line_length -ge 80 ]; then
+            echo "ERROR: CHANGELOG has lines longer than 80 characters."
+            exit 1
+          fi
+
   build-mails:
     runs-on: ubuntu-latest
     defaults: