Ensure uv picks up Python 3.13t correctly

.github/workflows/test.yml

@@ -100,6 +100,8 @@ jobs:
           allow-prereleases: true
 
       - uses: yezz123/setup-uv@v4
+        with:
+          "uv-venv": "venv"
 
       # 1. Test suite with free-threading enabled, but no free-threading-specific plugins
       - name: Run free-threaded tests on ${{ matrix.platform}}
@@ -116,14 +118,12 @@ jobs:
           UV_NO_CACHE: "true"
         run: |
           python -VV
-          uv venv
-          source .venv/bin/activate
           uv pip install --upgrade --only-binary :all: numpy scipy
 
       - name: Run free-threaded tests with ${{ matrix.plugin }} on ${{ matrix.platform}}
         if: ${{ matrix.plugin != 'none' }}
         run: |
-          source .venv/bin/activate
+          python -VV
           uv pip install -e .
           uv pip install pytest ${{ matrix.plugin }}
           if [ "${{ matrix.plugin }}" == "pytest-run-parallel" ]; then