Bump astral-sh/setup-uv from 5 to 6 (#46)

Author: dependabot[bot]

.github/workflows/ci.yaml

@@ -12,7 +12,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install uv
-        uses: astral-sh/setup-uv@v5
+        uses: astral-sh/setup-uv@v6
 
       - name: Set up Python
         run: uv python install