revert to latest as all ubuntu-images appear broken

Author: hardillb

.github/workflows/main.yml

@@ -200,7 +200,7 @@ jobs:
       LATEST_NODE: 20
       DEFAULT_IMAGE: nodered/node-red
       DEV_IMAGE: nodered/node-red-dev
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-latest
 
     steps:
       - name: Checkout