bump setup-uv to v6

Author: lancelote

.github/workflows/check.yaml

@@ -19,7 +19,7 @@ jobs:
           python-version: ">=3.13"
 
       - name: install uv
-        uses: astral-sh/setup-uv@v3
+        uses: astral-sh/setup-uv@v6
         with:
           enable-cache: true
           cache-dependency-glob: "uv.lock"