build(deps): bump actions/setup-python from 6.2.0 to 6.3.0

Bumps [actions/setup-python](https://github.com/actions/setup-python) from 6.2.0 to 6.3.0.
- [Release notes](https://github.com/actions/setup-python/releases)
- [Commits](actions/setup-python@v6.2.0...v6.3.0)

---
updated-dependencies:
- dependency-name: actions/setup-python
  dependency-version: 6.3.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v7.0.0
-      - uses: actions/setup-python@v6.2.0
+      - uses: actions/setup-python@v6.3.0
         with:
           python-version: '3.11'
           cache: pip
@@ -112,7 +112,7 @@ jobs:
         with:
           repository: open-contracting/spoonbill-test
           path: test
-      - uses: actions/setup-python@v6.2.0
+      - uses: actions/setup-python@v6.3.0
         with:
           python-version: '3.11'
       - run: pip install -r test/requirements_dev.txt