Merge pull request #118 from w3c/ubuntu-latest

GitHub actions: replace ubuntu-20.04 with ubuntu-latest

Author: jan-ivar

.github/workflows/auto-publish.yml

@@ -9,7 +9,7 @@ on:
 jobs:
   main:
     name: Build, Validate and Deploy
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
       - uses: w3c/spec-prod@v2