fix: Use double quotes for Python version in YAML

Fix yamllint error by using double quotes instead of single quotes
for python-version string value.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>
Signed-off-by: Joe Isaacs <[email protected]>

Author: joseph-isaacs

.github/workflows/ci.yml

@@ -438,7 +438,7 @@ jobs:
         if: matrix.os == 'windows-x64'
         uses: actions/setup-python@v5
         with:
-          python-version: '3.11'
+          python-version: "3.11"
       - uses: ./.github/actions/setup-rust
         with:
           repo-token: ${{ secrets.GITHUB_TOKEN }}