Upgrade jQuery

package.json

@@ -53,7 +53,7 @@
     "image-size": "^0.6.2",
     "image-type": "^3.0.0",
     "jimp": "0.2.28",
-    "jquery": "^2.2.4",
+    "jquery": "^3.3.1",
     "kcors": "^2.2.1",
     "koa": "^2.5.1",
     "koa-bodyparser": "^4.2.1",

yarn.lock

@@ -3515,9 +3515,9 @@ jpeg-js@^0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/jpeg-js/-/jpeg-js-0.2.0.tgz#53e448ec9d263e683266467e9442d2c5a2ef5482"
 
-jquery@^2.2.4:
-  version "2.2.4"
-  resolved "https://registry.yarnpkg.com/jquery/-/jquery-2.2.4.tgz#2c89d6889b5eac522a7eea32c14521559c6cbf02"
+jquery@^3.3.1:
+  version "3.3.1"
+  resolved "https://registry.yarnpkg.com/jquery/-/jquery-3.3.1.tgz#958ce29e81c9790f31be7792df5d4d95fc57fbca"
 
 js-base64@^2.1.8:
   version "2.4.5"