Pin antd to version 4.2.0 (#6511)

Co-authored-by: depfu[bot] <23717796+depfu[bot]@users.noreply.github.com>

package.json

@@ -64,7 +64,7 @@
     "@ant-design/icons": "^4.0.0",
     "@ant-design/pro-layout": "^5.0.8",
     "@ant-design/pro-table": "2.2.7",
-    "antd": "^4.0.0",
+    "antd": "4.2.0",
     "classnames": "^2.2.6",
     "lodash": "^4.17.11",
     "moment": "~2.24.0",