ci: build pages without deploying on non-default branches

Author: radhermit

.github/workflows/deploy.yml .github/workflows/ci.yml.github/workflows/deploy.yml renamed to .github/workflows/ci.yml

@@ -1,8 +1,7 @@
-name: deploy
+name: ci
 
 on:
   push:
-    branches: [main]
   workflow_dispatch:
 
 permissions:
@@ -33,6 +32,7 @@ jobs:
       run: hugo --minify
 
     - name: Upload artifact
+      if: ${{ github.ref_name == 'main' }}
       uses: actions/upload-pages-artifact@v3
       with:
         path: public