ci: bump astral-sh/setup-uv from 4 to 7

Bumps [astral-sh/setup-uv](https://github.com/astral-sh/setup-uv) from 4 to 7.
- [Release notes](https://github.com/astral-sh/setup-uv/releases)
- [Commits](astral-sh/setup-uv@v4...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] <support@github.com>

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v6
-      - uses: astral-sh/setup-uv@v4
+      - uses: astral-sh/setup-uv@v7
       - run: uv sync
       - run: uv run ruff check src/ tests/
       - run: uv run ruff format --check src/ tests/
@@ -29,7 +29,7 @@ jobs:
           sudo rm -rf /usr/share/dotnet /usr/local/lib/android /opt/ghc /opt/hostedtoolcache/CodeQL
           # NOTE: Don't prune Docker images - keeps base images cached for faster builds
       - uses: actions/checkout@v6
-      - uses: astral-sh/setup-uv@v4
+      - uses: astral-sh/setup-uv@v7
       - name: Cache HuggingFace models
         uses: actions/cache@v4
         with: