Update dependency prop-types to v15.7.0

package.json

@@ -57,7 +57,7 @@
     "file-loader": "1.1.5",
     "flow-bin": "0.59.0",
     "jest": "21.2.1",
-    "prop-types": "15.6.0",
+    "prop-types": "15.7.0",
     "raf": "3.4.0",
     "react": "16.1.1",
     "react-dom": "16.1.1",

yarn.lock

@@ -4884,7 +4884,14 @@ promise@^7.1.1:
   dependencies:
     asap "~2.0.3"
 
-[email protected], prop-types@^15.5.10, prop-types@^15.6.0:
+[email protected]:
+  version "15.7.0"
+  resolved "https://registry.yarnpkg.com/prop-types/-/prop-types-15.7.0.tgz#cc45233a8ccef80f4a2e3a6bf575bee4e19b4a50"
+  dependencies:
+    object-assign "^4.1.1"
+    react-is "^16.8.1"
+
+prop-types@^15.5.10, prop-types@^15.6.0:
   version "15.6.0"
   resolved "https://registry.yarnpkg.com/prop-types/-/prop-types-15.6.0.tgz#ceaf083022fc46b4a35f69e13ef75aed0d639856"
   dependencies:
@@ -5035,6 +5042,10 @@ [email protected]:
     object-assign "^4.1.1"
     prop-types "^15.6.0"
 
+react-is@^16.8.1:
+  version "16.8.1"
+  resolved "https://registry.yarnpkg.com/react-is/-/react-is-16.8.1.tgz#a80141e246eb894824fb4f2901c0c50ef31d4cdb"
+
 react-test-renderer@^16.0.0-0:
   version "16.1.1"
   resolved "https://registry.yarnpkg.com/react-test-renderer/-/react-test-renderer-16.1.1.tgz#a05184688d564be799f212449262525d1e350537"