ci: fix presubmit (#28)

* chore: fix presubmit

* resolve conflict

Author: twishabansal

.github/workflows/presubmit-tests.yml

@@ -27,5 +27,11 @@ jobs:
       - name: Install Gemini CLI
         run: npm install @google/gemini-cli
 
+      - name: Install toolbox binary
+        run: |
+          VERSION=$(cat toolbox_version.txt)
+          curl -L -o toolbox https://storage.googleapis.com/genai-toolbox/v$VERSION/linux/amd64/toolbox
+          chmod +x toolbox
+
       - name: Install Extension
         run: npx gemini extensions install --path=.