update workflow

.gitea/workflows/build.yaml

@@ -25,6 +25,8 @@ jobs:
       uses: astral-sh/setup-uv@v5
     - name: Set up Python
       run: uv python install
+      with:
+        python-version-file: "pyproject.toml"
     - name: Set Git identity
       run: |
         git config user.name "Gitea CI"