React-is will only validate lazy in versions >16.6 (remix-run#6447)

Author: frehner

packages/react-router/package-lock.json

@@ -46,7 +46,7 @@
     "loose-envify": "^1.3.1",
     "path-to-regexp": "^1.7.0",
     "prop-types": "^15.6.2",
-    "react-is": "^16.5.2",
+    "react-is": "^16.6.0",
     "tiny-invariant": "^1.0.2",
     "tiny-warning": "^1.0.0"
   },