chore(deps): update actions/setup-python action to v6

Author: renovate[bot]

.github/workflows/build.yml

@@ -86,7 +86,7 @@ jobs:
     name: Build ${{ matrix.name }}
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v6
         with:
           python-version: '3.13'
       - uses: actions/setup-node@v4