chore: use actions/setup-python to install python instead of using uv install python

.gitea/workflows/build.yml

@@ -26,8 +26,8 @@ jobs:
         fetch-tags: true
     - name: Install uv
       uses: astral-sh/setup-uv@v5
-    - name: Set up Python
-      run: uv python install
+    - name: "Set up Python"
+      uses: actions/setup-python@v6
       with:
         python-version-file: "pyproject.toml"
     - name: Set Git identity