CI: set up python version with uv

Author: Epse

.github/workflows/ci.yml

@@ -31,5 +31,6 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v4
-      - uses: astral-sh/setup-uv@v3
+      - uses: astral-sh/setup-uv@v6
+      - run: uv python install
       - run: uv run pytest