dont setup github pages if pull request

Signed-off-by: strawberry <strawberry@puppygock.gay>

.github/workflows/ci.yml

@@ -47,6 +47,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Setup GitHub Pages
+        if: github.event_name != 'pull_request'
         uses: actions/configure-pages@v4
 
       - name: Install Nix (with flakes and nix-command enabled)
@@ -191,11 +192,13 @@ jobs:
           compression-level: 0
 
       - name: Upload generated documentation (book) as GitHub Pages artifact
+        if: github.event_name != 'pull_request'
         uses: actions/upload-pages-artifact@v3
         with:
           path: public
 
       - name: Deploy to GitHub Pages
+        if: github.event_name != 'pull_request'
         id: deployment
         uses: actions/deploy-pages@v4