chore: update audit workflow to ubuntu-latest

- update aud.yml workflow to use the latest ubuntu

Author: tvpeter

.github/workflows/audit.yml

@@ -11,9 +11,9 @@ on:
 jobs:
 
   security_audit:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
       - uses: actions-rust-lang/audit@v1
         with:
-          token: ${{ secrets.GITHUB_TOKEN }}
+          token: ${{ secrets.GITHUB_TOKEN }}