fix: Set use-baseline to 'warn' in recommended config (#110)

fixes #80

Author: nzakas

src/index.js

@@ -46,7 +46,7 @@ const plugin = {
 				"css/no-duplicate-imports": "error",
 				"css/no-invalid-at-rules": "error",
 				"css/no-invalid-properties": "error",
-				"css/use-baseline": "error",
+				"css/use-baseline": "warn",
 			}),
 		},
 	},