Use latest OS for news pipeline (#486)

Author: Secrus

.github/workflows/news.yaml

@@ -9,7 +9,7 @@ permissions: {}
 jobs:
   check-news-entry:
     name: news entry
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
 
     steps:
       - uses: actions/checkout@v4