build(deps): bump actions/setup-python from 6.1.0 to 6.2.0

Bumps [actions/setup-python](https://github.com/actions/setup-python) from 6.1.0 to 6.2.0.
- [Release notes](https://github.com/actions/setup-python/releases)
- [Commits](actions/setup-python@83679a8...a309ff8)

---
updated-dependencies:
- dependency-name: actions/setup-python
  dependency-version: 6.2.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/build-xapian.yml

@@ -46,7 +46,7 @@ jobs:
 
         # Setup version of Python to use
       - name: Set Up Python 3.13
-        uses: actions/setup-python@83679a892e2d95755f2dac6acb0bfd1e9ac5d548 # v6.1.0
+        uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0
         with:
           python-version: 3.13
           allow-prereleases: true

.github/workflows/ci-test.yml

@@ -120,7 +120,7 @@ jobs:
 
       # Setup version of Python to use
       - name: Set Up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@83679a892e2d95755f2dac6acb0bfd1e9ac5d548 # v6.1.0
+        uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0
         with:
           python-version: ${{ matrix.python-version }}
           allow-prereleases: true