Update dependencies

package.json

@@ -34,13 +34,13 @@
     "@babel/core": "^7.0.0",
     "@babel/preset-env": "^7.4.5",
     "babel-eslint": "^10.0.1",
-    "del": "^4.1.1",
+    "del": "^5.0.0",
     "gulp": "^4.0.2",
-    "gulp-autoprefixer": "^6.1.0",
+    "gulp-autoprefixer": "^7.0.0",
     "gulp-babel": "^8.0.0",
     "gulp-concat": "^2.6.1",
     "gulp-cssnano": "^2.1.3",
-    "gulp-eslint": "^5.0.0",
+    "gulp-eslint": "^6.0.0",
     "gulp-notify": "^3.2.0",
     "gulp-plumber": "^1.2.1",
     "gulp-rename": "^1.4.0",
@@ -52,4 +52,4 @@
     "uglifyjs-webpack-plugin": "^2.1.3",
     "webpack-stream": "^5.2.1"
   }
-}
\ No newline at end of file
+}