Bump astral-sh/setup-uv from 5 to 6 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 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: github-actions
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/build.yaml

@@ -31,7 +31,7 @@ jobs:
         run: /bin/date -u "+%U" > .weeknum.txt
         shell: bash
 
-      - uses: astral-sh/setup-uv@v5
+      - uses: astral-sh/setup-uv@v6
         with:
           enable-cache: true
           cache-dependency-glob: ".weeknum.txt"
@@ -66,7 +66,7 @@ jobs:
         run: /bin/date -u "+%U" > .weeknum.txt
         shell: bash
 
-      - uses: astral-sh/setup-uv@v5
+      - uses: astral-sh/setup-uv@v6
         with:
           enable-cache: true
           cache-dependency-glob: ".weeknum.txt"