ci: bump setup-uv to maintained tag scheme

The old vX tags have been dropped to (force) (usually) better security practices. Dependabot will not update, however, leaving this v7 tag forever. Manually updating now.

See astral-sh/setup-uv#830

Committed via https://github.com/asottile/all-repos

Author: henryiii

.github/workflows/test.yml

@@ -38,7 +38,7 @@ jobs:
           python-version: ${{ matrix.python-version }}
           allow-prereleases: true
 
-      - uses: astral-sh/setup-uv@v7
+      - uses: astral-sh/setup-uv@v8.0.0
 
       - name: Install tox
         run: uv tool install --with tox-gh-actions --with tox-uv tox