chore(deps): bump astral-sh/setup-uv from 5 to 6

Bumps [astral-sh/setup-uv](https://github.com/astral-sh/setup-uv) from 5 to 6.
- [Release notes](https://github.com/astral-sh/setup-uv/releases)
- [Commits](astral-sh/setup-uv@v5...v6)

---
updated-dependencies:
- dependency-name: astral-sh/setup-uv
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/build-test-publish.yml

@@ -122,7 +122,7 @@ jobs:
         git config --global user.name 'NiPreps Bot'
         git config --global user.email '[email protected]'
     - name: Install the latest version of uv
-      uses: astral-sh/setup-uv@v5
+      uses: astral-sh/setup-uv@v6
     - name: Set up Python ${{ matrix.python-version }}
       uses: conda-incubator/setup-miniconda@v3
       with: