feat: update react-overlays dependency (bigcalendar#1816)

Fixes bigcalendar#1813

Author: mstrokin

package.json

@@ -137,7 +137,7 @@
     "lodash-es": "^4.17.11",
     "memoize-one": "^5.1.1",
     "prop-types": "^15.7.2",
-    "react-overlays": "^2.0.0-0",
+    "react-overlays": "^4.1.1",
     "uncontrollable": "^7.0.0"
   },
   "resolutions": {