Bump astral-sh/setup-uv from 5 to 6 in the actions group (#150)

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


Updates `astral-sh/setup-uv` from 5 to 6
- [Release notes](https://github.com/astral-sh/setup-uv/releases)
- [Commits](astral-sh/setup-uv@v5...v6)

---
updated-dependencies:
- dependency-name: astral-sh/setup-uv
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: actions
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/build-docs.yml

@@ -49,7 +49,7 @@ jobs:
           path: ~/.cargo
           key: ${{ runner.os }}-docs-cargo-${{ hashFiles('Cargo.lock') }}
       - name: Install uv
-        uses: astral-sh/setup-uv@v5
+        uses: astral-sh/setup-uv@v6
         with:
           enable-cache: true
           cache-dependency-glob: "uv.lock"
@@ -80,7 +80,7 @@ jobs:
           path: ~/.cargo
           key: ${{ runner.os }}-docs-cargo-${{ hashFiles('Cargo.lock') }}
       - name: Install uv
-        uses: astral-sh/setup-uv@v5
+        uses: astral-sh/setup-uv@v6
       - run: uvx nox -s docs-rs
       - name: upload rustdoc build as artifact
         uses: actions/upload-artifact@v4