Update astral-sh/setup-uv action to v4

Author: renovate[bot]

.github/workflows/ci.yml

@@ -45,7 +45,7 @@ jobs:
       - uses: actions/checkout@v4
         with:
           fetch-depth: 0
-      - uses: astral-sh/setup-uv@v3
+      - uses: astral-sh/setup-uv@v4
         with:
           enable-cache: true
       - name: Install Python 3.11