Fix package build by using hatch instead of uv

Using `uv build` creates a wheel package without any code.

Author: amotl

.github/workflows/release.yml

@@ -20,8 +20,13 @@ jobs:
       - name: Set up uv
         uses: astral-sh/setup-uv@v7
 
+      - name: Set up Hatch
+        env:
+          UV_SYSTEM_PYTHON: true
+        run: uv pip install hatch
+
       - name: Build package
-        run: uv build
+        run: hatch build
 
       - name: Publish package to PyPI
         if: startsWith(github.event.ref, 'refs/tags')