Bump astral-sh/setup-uv from 5 to 6

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

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

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

.github/workflows/build.yml

@@ -40,7 +40,7 @@ jobs:
           fetch-depth: "0" # 0=all, needed for setuptools-scm to resolve version tags
 
       - name: Install uv
-        uses: astral-sh/setup-uv@v5
+        uses: astral-sh/setup-uv@v6
         with:
           version: "0.5.x"
 
@@ -136,7 +136,7 @@ jobs:
             tesseract
 
       - name: Install uv
-        uses: astral-sh/setup-uv@v5
+        uses: astral-sh/setup-uv@v6
         with:
           version: "0.5.x"
 
@@ -186,7 +186,7 @@ jobs:
           fetch-depth: "0" # 0=all, needed for setuptools-scm to resolve version tags
 
       - name: Install uv
-        uses: astral-sh/setup-uv@v5
+        uses: astral-sh/setup-uv@v6
         with:
           version: "0.5.x"
 
@@ -225,7 +225,7 @@ jobs:
           fetch-depth: "0" # 0=all, needed for setuptools-scm to resolve version tags
 
       - name: Install uv
-        uses: astral-sh/setup-uv@v5
+        uses: astral-sh/setup-uv@v6
         with:
           version: "0.5.x"