build(deps): bump astral-sh/setup-uv from 8.3.2 to 9.0.0

Bumps [astral-sh/setup-uv](https://github.com/astral-sh/setup-uv) from 8.3.2 to 9.0.0.
- [Release notes](https://github.com/astral-sh/setup-uv/releases)
- [Commits](astral-sh/setup-uv@11f9893...c771a70)

---
updated-dependencies:
- dependency-name: astral-sh/setup-uv
  dependency-version: 9.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/downstream.yml

@@ -47,6 +47,6 @@ jobs:
         with:
           python-version: "3.12"
           allow-prereleases: true
-      - uses: astral-sh/setup-uv@11f9893b081a58869d3b5fccaea48c9e9e46f990 # v8.3.2
+      - uses: astral-sh/setup-uv@c771a70e6277c0a99b617c7a806ffedaca235ff9 # v9.0.0
       - name: Run downstream recipe
         run: uv run downstream/run_downstream.py "${{ matrix.recipe }}"