update jest to 21.0.2 to support watchPathIgnorePatterns configuration

Author: aisensiy

packages/react-scripts/package.json

@@ -24,7 +24,7 @@
     "autoprefixer": "7.1.6",
     "babel-core": "6.26.0",
     "babel-eslint": "7.2.3",
-    "babel-jest": "20.0.3",
+    "babel-jest": "21.0.2",
     "babel-loader": "7.1.2",
     "babel-preset-react-app": "^3.1.0",
     "babel-runtime": "6.26.0",
@@ -44,7 +44,7 @@
     "file-loader": "1.1.5",
     "fs-extra": "3.0.1",
     "html-webpack-plugin": "2.29.0",
-    "jest": "20.0.4",
+    "jest": "21.0.2",
     "object-assign": "4.1.1",
     "postcss-flexbugs-fixes": "3.2.0",
     "postcss-loader": "2.0.8",

packages/react-scripts/scripts/utils/createJestConfig.js

@@ -62,6 +62,7 @@ module.exports = (resolve, rootDir, isEjecting) => {
     'coverageReporters',
     'coverageThreshold',
     'snapshotSerializers',
+    'watchPathIgnorePatterns',
   ];
   if (overrides) {
     supportedKeys.forEach(key => {