Tests: Use ubuntu-24.04 (processone/ejabberd#4281)

Author: badlop

.github/workflows/tests.yml

@@ -25,7 +25,7 @@ jobs:
 
   build:
     name: Build
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     strategy:
       fail-fast: true
       max-parallel: 1