fix(package): update react-popper to version 2.2.0

Closes #421

Author: greenkeeper[bot]

package.json

@@ -42,7 +42,7 @@
     "react-instantsearch-dom": "^5.4.0",
     "react-masonry-component": "^6.2.1",
     "react-modal": "^3.4.5",
-    "react-popper": "^1.0.0",
+    "react-popper": "^2.2.0",
     "react-portal": "^4.1.4",
     "react-responsive": "^4.1.0",
     "react-spring": "^5.6.11",