fix github worklfows testing python code

.github/workflows/build-push-backend.yml

@@ -19,28 +19,20 @@ on:
 
 jobs:
   run-tests:
+    name: Run Python Tests
     runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        python-version: [ "3.13" ]
 
     steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-
-      - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v5
-        with:
-          python-version: ${{ matrix.python-version }}
+      - uses: actions/checkout@v4
 
       - name: Install uv
-        run: pip install uv
+        uses: astral-sh/setup-uv@v5
 
-      - name: Install dependencies
-        run: uv pip install .[dev]
+      - name: Install the project
+        run: uv sync --locked --all-extras --dev
 
       - name: Run tests
-        run: pytest
+        run: uv run pytest tests
 
   build-and-push:
     needs: run-tests