Updated node packages and exclude vendor directory while creating POT

Gruntfile.js

@@ -199,6 +199,7 @@ module.exports = function( grunt ) {
 					potFilename: 'woocommerce.pot',
 					exclude: [
 						'apigen/.*',
+						'vendor/.*',
 						'tests/.*',
 						'tmp/.*'
 					]

package.json

@@ -15,7 +15,7 @@
     "test:single": "cross-env NODE_CONFIG_DIR='./tests/e2e-tests/config' BABEL_ENV=commonjs mocha --compilers js:babel-register"
   },
   "devDependencies": {
-    "autoprefixer": "^6.7.7",
+    "autoprefixer": "~7.1.6",
     "babel": "^6.5.2",
     "babel-cli": "^6.14.0",
     "babel-eslint": "^7.0.0",
@@ -26,25 +26,25 @@
     "chai-as-promised": "^6.0.0",
     "chromedriver": "^2.33.0",
     "config": "^1.24.0",
-    "cross-env": "^3.0.0",
+    "cross-env": "~5.1.1",
     "grunt": "~1.0.1",
-    "grunt-checktextdomain": "~1.0.0",
-    "grunt-contrib-clean": "~1.0.0",
-    "grunt-contrib-concat": "1.0.1",
-    "grunt-contrib-cssmin": "~2.2.0",
+    "grunt-checktextdomain": "~1.0.1",
+    "grunt-contrib-clean": "~1.1.0",
+    "grunt-contrib-concat": "~1.0.1",
+    "grunt-contrib-cssmin": "~2.2.1",
     "grunt-contrib-jshint": "~1.1.0",
-    "grunt-contrib-uglify": "~3.0.0",
+    "grunt-contrib-uglify": "~3.1.0",
     "grunt-contrib-watch": "~1.0.0",
     "grunt-phpcs": "~0.4.0",
-    "grunt-postcss": "~0.8.0",
+    "grunt-postcss": "~0.9.0",
     "grunt-rtlcss": "~2.0.1",
     "grunt-sass": "~2.0.0",
     "grunt-shell": "~2.1.0",
-    "grunt-stylelint": "~0.8.0",
-    "grunt-wp-i18n": "~1.0.0",
+    "grunt-stylelint": "~0.9.0",
+    "grunt-wp-i18n": "~1.0.1",
     "istanbul": "^1.0.0-alpha",
     "mocha": "^3.0.2",
-    "stylelint": "^7.8.0",
+    "stylelint": "~8.2.0",
     "wc-e2e-page-objects": "0.4.0"
   },
   "engines": {