ci: switch runner to ubuntu-latest

Author: chendaniely

.github/workflows/publish.yml

@@ -7,7 +7,7 @@ name: Quarto Publish
 
 jobs:
   build-deploy:
-    runs-on: macos-latest # ubuntu-latest windows-latest
+    runs-on: ubuntu-latest # macos-latest #  windows-latest
     permissions:
       contents: write
     steps: