fix: use uv sync to create venv for pytest

Author: ServerSideHannes

.github/workflows/test.yml

@@ -27,7 +27,7 @@ jobs:
         run: pip install uv
 
       - name: Install dependencies
-        run: uv sync --frozen
+        run: uv sync
 
       - name: Run all tests
         run: make test-all