[core] Upgrade the dev dependencies (#12220)

package.json

@@ -69,7 +69,7 @@
     "@types/enzyme": "^3.1.4",
     "@types/react": "^16.3.14",
     "argos-cli": "^0.0.9",
-    "autoprefixer": "^8.0.0",
+    "autoprefixer": "^9.0.0",
     "autosuggest-highlight": "^3.1.1",
     "babel-eslint": "^8.2.2",
     "babel-loader": "8.0.0-beta.2",
@@ -105,7 +105,7 @@
     "file-loader": "^1.1.5",
     "flow-bin": "0.62.0",
     "flow-typed": "^2.2.3",
-    "fs-extra": "^6.0.0",
+    "fs-extra": "^7.0.0",
     "glob": "^7.1.2",
     "gm": "^1.23.0",
     "isomorphic-fetch": "^2.2.1",
@@ -122,7 +122,7 @@
     "mocha": "^5.0.0",
     "next": "^6.0.4-canary.8",
     "nyc": "^12.0.1",
-    "postcss": "^6.0.16",
+    "postcss": "^7.0.0",
     "prettier": "^1.8.2",
     "puppeteer": "^1.5.0",
     "raw-loader": "^0.5.1",
@@ -143,7 +143,7 @@
     "redux": "^4.0.0",
     "redux-logger": "^3.0.6",
     "rimraf": "^2.6.2",
-    "rollup": "^0.62.0",
+    "rollup": "^0.63.0",
     "rollup-plugin-babel": "^4.0.0-beta.4",
     "rollup-plugin-commonjs": "^9.1.3",
     "rollup-plugin-node-globals": "^1.2.1",

packages/material-ui-icons/package.json

@@ -46,7 +46,7 @@
     "recompose": "^0.27.0"
   },
   "devDependencies": {
-    "fs-extra": "^6.0.1",
+    "fs-extra": "^7.0.0",
     "mkdirp": "^0.5.0",
     "mustache": "^2.0.0",
     "svgo": "^1.0.5",