Bump version from 1.5.1 to 1.5.2

Author: Amin Dhouib

package.json

@@ -2,7 +2,7 @@
     "name": "upup-react-file-uploader",
     "author": "Devino Solutions",
     "license": "MIT",
-    "version": "1.5.1",
+    "version": "1.5.2",
     "publishConfig": {
         "access": "public"
     },