ci: fix presubmits (gemini-cli-extensions#29)

* Update presubmit-tests.yml

* Update presubmit-tests.yml

* Update presubmit-tests.yml

Author: twishabansal

.github/workflows/presubmit-tests.yml

@@ -34,4 +34,4 @@ jobs:
           chmod +x toolbox
 
       - name: Install Extension
-        run: npx gemini extensions install --path=.
+        run: yes | npx gemini extensions install --path=.