Update github actions

Add datastore emulator into github action pipeline.

Author: splasky

.github/workflows/python-self-hosted.yaml

@@ -19,11 +19,23 @@ jobs:
       uses: actions/setup-python@v5
       with:
         python-version: '3.13'
+    
+    - name: 'Set up Cloud SDK'
+      uses: 'google-github-actions/setup-gcloud@v2'
+      with:
+        version: '>= 530.0.0'
+
+    - name: 'Use gcloud CLI'
+      run: 'gcloud info'
 
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        pip install -r requirements.txt
+        if [ -f requirements.txt ]; then
+          pip install -r requirements.txt
+        else
+          echo "No requirements.txt found"
+        fi
 
     - name: Run tests
       run: |