chore(deps): update astral-sh/setup-uv action to v8

Author: renovate[bot]

.github/workflows/visual-diff.yaml

@@ -19,7 +19,7 @@ jobs:
 
     steps:
       - name: Install the latest version of uv
-        uses: astral-sh/setup-uv@v7
+        uses: astral-sh/setup-uv@v8
         with:
           version: "latest"