Bump jquery from 3.3.1 to 3.4.0 in /packages/rocketchat-livech… (#14922)

Bumps [jquery](https://github.com/jquery/jquery) from 3.3.1 to 3.4.0.
- [Release notes](https://github.com/jquery/jquery/releases)
- [Commits](https://github.com/jquery/jquery/compare/3.3.1...3.4.0)

Signed-off-by: dependabot[bot] <support@github.com>

packages/rocketchat-livechat/.app/package-lock.json

@@ -490,9 +490,9 @@
       }
     },
     "jquery": {
-      "version": "3.3.1",
-      "resolved": "https://registry.npmjs.org/jquery/-/jquery-3.3.1.tgz",
-      "integrity": "sha512-Ubldcmxp5np52/ENotGxlLe6aGMvmF4R8S6tZjsP6Knsaxd/xp3Zrh50cG93lR6nPXyUFwzN3ZSOQI0wRJNdGg=="
+      "version": "3.4.0",
+      "resolved": "https://registry.npmjs.org/jquery/-/jquery-3.4.0.tgz",
+      "integrity": "sha512-ggRCXln9zEqv6OqAGXFEcshF5dSBvCkzj6Gm2gzuR5fWawaX8t7cxKVkkygKODrDAzKdoYw3l/e3pm3vlT4IbQ=="
     },
     "media-typer": {
       "version": "0.3.0",

packages/rocketchat-livechat/.app/package.json

@@ -24,7 +24,7 @@
     "autolinker": "^1.8.1",
     "bcrypt": "^3.0.2",
     "core-js": "^2.5.7",
-    "jquery": "^3.3.1",
+    "jquery": "^3.4.0",
     "meteor-node-stubs": "^0.4.1",
     "mime-db": "^1.37.0",
     "mime-type": "^3.0.7",