Chore(deps): Bump astral-sh/setup-uv from 6 to 7

Bumps [astral-sh/setup-uv](https://github.com/astral-sh/setup-uv) from 6 to 7.
- [Release notes](https://github.com/astral-sh/setup-uv/releases)
- [Commits](astral-sh/setup-uv@v6...v7)

---
updated-dependencies:
- dependency-name: astral-sh/setup-uv
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/tox.yml

@@ -57,7 +57,7 @@ jobs:
           path: dist/
       - name: Unpack sdist
         run: tar xf dist/*.tar.gz --strip-components=1
-      - uses: astral-sh/setup-uv@v6
+      - uses: astral-sh/setup-uv@v7
       - name: Install Tox
         run: uv tool install -p 3.13 --with=tox-uv tox
       - name: Test