Bump astral-sh/setup-uv from 5 to 6 in the major group

Bumps the major group with 1 update: [astral-sh/setup-uv](https://github.com/astral-sh/setup-uv).


Updates `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
  dependency-group: major
...

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

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -100,7 +100,7 @@ jobs:
           uses: actions/checkout@v4
         - uses: taiki-e/install-action@just
         - name: Install the latest version of uv
-          uses: astral-sh/setup-uv@v5
+          uses: astral-sh/setup-uv@v6
         - name: Install codespell
           run: |
               uv venv .venv