Run Safety GitHub Actions on 22.04

Author: domdfcoding

.github/workflows/safety.yml

@@ -15,7 +15,7 @@ permissions:
 jobs:
   Run:
     name: "Safety"
-    runs-on: "ubuntu-18.04"
+    runs-on: "ubuntu-22.04"
 
     steps:
       - name: Checkout 🛎️