Bump astral-sh/setup-uv from 6.4.3 to 6.8.0

Bumps [astral-sh/setup-uv](https://github.com/astral-sh/setup-uv) from 6.4.3 to 6.8.0.
- [Release notes](https://github.com/astral-sh/setup-uv/releases)
- [Commits](astral-sh/setup-uv@v6.4.3...v6.8.0)

---
updated-dependencies:
- dependency-name: astral-sh/setup-uv
  dependency-version: 6.8.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

.github/workflows/deploy-docs.yaml

@@ -33,7 +33,7 @@ jobs:
 
       # https://github.com/astral-sh/setup-uv
       - name: Install uv
-        uses: astral-sh/setup-uv@v6.4.3
+        uses: astral-sh/setup-uv@v6.8.0
         with:
           python-version: 3.13
           enable-cache: true

.github/workflows/main.yaml

@@ -32,7 +32,7 @@ jobs:
 
       # https://github.com/astral-sh/setup-uv
       - name: Install uv
-        uses: astral-sh/setup-uv@v6.4.3
+        uses: astral-sh/setup-uv@v6.8.0
         with:
           python-version: ${{ matrix.python-version }}
           enable-cache: true

.github/workflows/pypi-publish.yaml

@@ -34,7 +34,7 @@ jobs:
 
       # https://github.com/astral-sh/setup-uv
       - name: Install uv
-        uses: astral-sh/setup-uv@v6.4.3
+        uses: astral-sh/setup-uv@v6.8.0
         with:
           python-version: 3.13
           enable-cache: true

.github/workflows/test_pages_build.yaml

@@ -32,7 +32,7 @@ jobs:
 
       # https://github.com/astral-sh/setup-uv
       - name: Install uv
-        uses: astral-sh/setup-uv@v6.4.3
+        uses: astral-sh/setup-uv@v6.8.0
         with:
           python-version: 3.13
           enable-cache: true