coverity: use a more recent ubuntu runner

Author: adriweb

.github/workflows/coverity.workflow.yml

@@ -7,7 +7,7 @@ on:
 
 jobs:
   coverity:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     steps:
     - name: Checkout Git Repo
       uses: actions/checkout@v5