Bump astral-sh/setup-uv from 7.1.3 to 7.1.6

Bumps [astral-sh/setup-uv](https://github.com/astral-sh/setup-uv) from 7.1.3 to 7.1.6.
- [Release notes](https://github.com/astral-sh/setup-uv/releases)
- [Commits](astral-sh/setup-uv@5a7eac6...681c641)

---
updated-dependencies:
- dependency-name: astral-sh/setup-uv
  dependency-version: 7.1.6
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

.github/workflows/docs.yaml

@@ -31,7 +31,7 @@ jobs:
     steps:
     - uses: actions/checkout@v5
     - name: Install uv
-      uses: astral-sh/setup-uv@5a7eac68fb9809dea845d802897dc5c723910fa3
+      uses: astral-sh/setup-uv@681c641aba71e4a1c380be3ab5e12ad51f415867
       with:
         enable-cache: true
     - name: Set up Python