Use latest version of actions for the Markdown link checker

Author: uhafner

.github/workflows/check-md-links.yml

@@ -5,7 +5,7 @@ on: push
 jobs:
   check-markdown-links:
     name: 'Check Markdown links'
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v6
       - uses: umbrelladocs/action-linkspector@v1.4.1