chore: specify @antv/util dependency (#3240)

Author: visiky

package.json

@@ -57,6 +57,7 @@
   "dependencies": {
     "@antv/event-emitter": "^0.1.2",
     "@antv/g2": "^4.1.26",
+    "@antv/util": "^2.0.17",
     "d3-hierarchy": "^2.0.0",
     "d3-regression": "^1.3.5",
     "fmin": "^0.0.2",