ci(deps): update actions/setup-python action to v6 (#32)

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

Author: renovate[bot]

.github/workflows/build-docker-image.yml

@@ -57,7 +57,7 @@ jobs:
         with:
           node-version: 22
           cache: "npm"
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v6
         with:
           python-version: "3.12"
           cache: "pip"