Updated dependencies.

package.json

@@ -34,12 +34,12 @@
         "fs-extra": "^8.0.1",
         "gulp": "^4.0.2",
         "gulp-concat": "^2.6.1",
-        "gulp-prettier": "^2.2.0",
+        "gulp-prettier": "^2.3.0",
         "gulp-rename": "^1.4.0",
         "gulp-replace": "^1.0.0",
         "gulp-uglify": "^3.0.2",
         "htmlhint": "^0.11.0",
-        "prettier": "^1.18.2",
+        "prettier": "^1.19.1",
         "puppeteer": "^1.20.0",
         "stylelint": "^11.1.1",
         "stylelint-config-standard": "^19.0.0"
@@ -54,7 +54,7 @@
         "pixi-particles": "^4.2.0",
         "pixi-projection": "^0.3.5",
         "pixi-viewport": "^4.3.3",
-        "pixi.js": "^5.1.5",
+        "pixi.js": "^5.2.0",
         "propagating-hammerjs": "^1.4.7"
     }
 }