chore(deps): update actions/setup-node action to v6 (#5)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/python-tests.yml

@@ -29,7 +29,7 @@ jobs:
     - name: Install dependencies
       run: uv sync --all-extras
     - name: Setup Node.js environment
-      uses: actions/setup-node@v4.3.0
+      uses: actions/setup-node@v6.2.0
       # with:
       #   # Used to specify a package manager for caching in the default directory. Supported values: npm, yarn, pnpm.
       #   cache: # optional