chore: update Jest to 23 (#42)

Author: thymikee

.travis.yml

@@ -1,7 +1,7 @@
 language: node_js
 node_js:
+- 10
 - 8
-- 6
 before_install:
 - yarn global add greenkeeper-lockfile@1
 install: yarn --ignore-engines

package.json

@@ -19,9 +19,9 @@
     "jest": ">=16"
   },
   "dependencies": {
-    "jest-diff": "^22.0.6",
-    "jest-snapshot": "^22.0.6",
-    "pretty-format": "^22.0.6",
+    "jest-diff": "^23.0.1",
+    "jest-snapshot": "^23.0.1",
+    "pretty-format": "^23.0.1",
     "strip-ansi": "^4.0.0"
   },
   "devDependencies": {
@@ -32,8 +32,8 @@
     "eslint": "^4.16.0",
     "eslint-config-callstack-io": "^1.1.1",
     "flow-bin": "^0.73.0",
-    "jest": "^22.0.6",
-    "react": "^16.2.0",
-    "react-test-renderer": "^16.2.0"
+    "jest": "^23.0.1",
+    "react": "^16.4.0",
+    "react-test-renderer": "^16.4.0"
   }
 }