Fix python version in github workflow

Author: kuyugama

.github/workflows/run-tests.yaml

@@ -31,7 +31,7 @@ jobs:
       - name: Install uv
         uses: astral-sh/setup-uv@v5.4.0
         with:
-          python-version: ${{matrix.python-version}}
+          python-version: 3.11
 
       - name: Install dependencies
         run: |