Tech: Update jQuery to 3.4.1 (#17290)

Fixes #17289

Special notes for your reviewer:
Updates jQuery to 3.4.1 (from 3.4.0) to fix the jQuery bug: https://blog.jquery.com/2019/05/01/jquery-3-4-1-triggering-focus-events-in-ie-and-finding-root-elements-in-ios-10/
(cherry picked from commit df6a4914c4)

package.json

@@ -191,7 +191,7 @@
     "eventemitter3": "2.0.3",
     "file-saver": "1.3.8",
     "immutable": "3.8.2",
-    "jquery": "3.4.0",
+    "jquery": "3.4.1",
     "lodash": "4.17.11",
     "moment": "2.24.0",
     "mousetrap": "1.6.3",

yarn.lock

@@ -10048,10 +10048,10 @@ jest@24.6.0:
     import-local "^2.0.0"
     jest-cli "^24.6.0"
 
-jquery@3.4.0:
-  version "3.4.0"
-  resolved "https://registry.yarnpkg.com/jquery/-/jquery-3.4.0.tgz#8de513fa0fa4b2c7d2e48a530e26f0596936efdf"
-  integrity sha512-ggRCXln9zEqv6OqAGXFEcshF5dSBvCkzj6Gm2gzuR5fWawaX8t7cxKVkkygKODrDAzKdoYw3l/e3pm3vlT4IbQ==
+jquery@3.4.1:
+  version "3.4.1"
+  resolved "https://registry.yarnpkg.com/jquery/-/jquery-3.4.1.tgz#714f1f8d9dde4bdfa55764ba37ef214630d80ef2"
+  integrity sha512-36+AdBzCL+y6qjw5Tx7HgzeGCzC81MDDgaUP8ld2zhx58HdqXGoBd+tHdrBMiyjGQs0Hxs/MLZTu/eHNJJuWPw==
 
 js-base64@^2.1.8, js-base64@^2.1.9:
   version "2.5.1"