Don't update environment

Author: Joseph-Edwards

.github/workflows/tests.yml

@@ -28,6 +28,7 @@ jobs:
       - uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python_version }}
+          update-environment: false
           # cache: "pip"
       - name: "Python version . . ."
         run: |