Bump astral-sh/setup-uv from 3 to 4 in the github_actions group

Bumps the github_actions group with 1 update: [astral-sh/setup-uv](https://github.com/astral-sh/setup-uv).


Updates `astral-sh/setup-uv` from 3 to 4
- [Release notes](https://github.com/astral-sh/setup-uv/releases)
- [Commits](astral-sh/setup-uv@v3...v4)

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

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

.github/workflows/testing.yaml

@@ -34,7 +34,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v4
-      - uses: astral-sh/setup-uv@v3
+      - uses: astral-sh/setup-uv@v4
       - name: Setup Python
         run: uv python install ${{ matrix.python-version }}
       - name: Install project