Update semgrep.yml

Author: rahul-bs

.github/workflows/semgrep.yml

@@ -12,7 +12,7 @@ on:
 jobs:
   semgrep:
     name: Scan
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
     container:
       image: returntocorp/semgrep
     if: (github.actor != 'dependabot[bot]')