fix(deps): update dependency @vanilla-extract/css to v1.15.1

Author: renovate[bot]

package-lock.json

@@ -30,7 +30,7 @@
     "@radix-ui/react-slot": "1.0.2",
     "@types/react": "18.3.1",
     "@types/react-dom": "18.3.0",
-    "@vanilla-extract/css": "1.14.2",
+    "@vanilla-extract/css": "1.15.1",
     "@vanilla-extract/recipes": "0.5.2",
     "@zendeskgarden/container-tabs": "2.0.10",
     "astro": "4.8.2",