ci: bump setup-uv to maintained tag scheme (#135)

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