Revert secret-scan to ubuntu-24.04

Author: pofl

.github/workflows/template_secret_scan.yml

@@ -6,7 +6,7 @@ on:
 jobs:
   trufflehog:
     name: trufflehog
-    runs-on: ubuntu-slim
+    runs-on: ubuntu-24.04
     permissions:
       contents: read