Bump sockjs from 0.3.18 to 0.3.21

Bumps [sockjs](https://github.com/sockjs/sockjs-node) from 0.3.18 to 0.3.21.
- [Release notes](https://github.com/sockjs/sockjs-node/releases)
- [Changelog](https://github.com/sockjs/sockjs-node/blob/v0.3.21/Changelog)
- [Commits](https://github.com/sockjs/sockjs-node/compare/v0.3.18...v0.3.21)
Signed-off-by: dependabot[bot] <support@github.com>

yarn.lock

@@ -2201,9 +2201,9 @@ fastparse@^1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/fastparse/-/fastparse-1.1.1.tgz#d1e2643b38a94d7583b479060e6c4affc94071f8"
 
-faye-websocket@^0.10.0:
-  version "0.10.0"
-  resolved "https://registry.yarnpkg.com/faye-websocket/-/faye-websocket-0.10.0.tgz#4e492f8d04dfb6f89003507f6edbf2d501e7c6f4"
+faye-websocket@^0.11.3:
+  version "0.11.3"
+  resolved "https://registry.yarnpkg.com/faye-websocket/-/faye-websocket-0.11.3.tgz#5c0e9a8968e8912c286639fde977a8b209f2508e"
   dependencies:
     websocket-driver ">=0.5.1"
 
@@ -2646,6 +2646,10 @@ http-errors@~1.6.1:
     setprototypeof "1.0.3"
     statuses ">= 1.3.1 < 2"
 
+http-parser-js@>=0.5.1:
+  version "0.5.3"
+  resolved "https://registry.yarnpkg.com/http-parser-js/-/http-parser-js-0.5.3.tgz#01d2709c79d41698bb01d4decc5e9da4e4a033d9"
+
 http-proxy-middleware@^0.17.3, http-proxy-middleware@~0.17.1:
   version "0.17.4"
   resolved "https://registry.yarnpkg.com/http-proxy-middleware/-/http-proxy-middleware-0.17.4.tgz#642e8848851d66f09d4f124912846dbaeb41b833"
@@ -4927,6 +4931,10 @@ rx-lite@^3.1.2:
   version "3.1.2"
   resolved "https://registry.yarnpkg.com/rx-lite/-/rx-lite-3.1.2.tgz#19ce502ca572665f3b647b10939f97fd1615f102"
 
+safe-buffer@>=5.1.0:
+  version "5.2.1"
+  resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.2.1.tgz#1eaf9fa9bdb1fdd4ec75f58f9cdb4e6b7827eec6"
+
 safe-buffer@^5.0.1:
   version "5.0.1"
   resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.0.1.tgz#d263ca54696cd8a306b5ca6551e92de57918fbe7"
@@ -5062,11 +5070,12 @@ sockjs-client@1.0.3, sockjs-client@^1.0.3:
     url-parse "^1.0.1"
 
 sockjs@^0.3.15:
-  version "0.3.18"
-  resolved "https://registry.yarnpkg.com/sockjs/-/sockjs-0.3.18.tgz#d9b289316ca7df77595ef299e075f0f937eb4207"
+  version "0.3.21"
+  resolved "https://registry.yarnpkg.com/sockjs/-/sockjs-0.3.21.tgz#b34ffb98e796930b60a0cfa11904d6a339a7d417"
   dependencies:
-    faye-websocket "^0.10.0"
-    uuid "^2.0.2"
+    faye-websocket "^0.11.3"
+    uuid "^3.4.0"
+    websocket-driver "^0.7.4"
 
 sort-keys@^1.0.0:
   version "1.1.2"
@@ -5453,13 +5462,9 @@ utils-merge@1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/utils-merge/-/utils-merge-1.0.0.tgz#0294fb922bb9375153541c4f7096231f287c8af8"
 
-uuid@^2.0.2:
-  version "2.0.3"
-  resolved "https://registry.yarnpkg.com/uuid/-/uuid-2.0.3.tgz#67e2e863797215530dff318e5bf9dcebfd47b21a"
-
-uuid@^3.0.0:
-  version "3.0.1"
-  resolved "https://registry.yarnpkg.com/uuid/-/uuid-3.0.1.tgz#6544bba2dfda8c1cf17e629a3a305e2bb1fee6c1"
+uuid@^3.0.0, uuid@^3.4.0:
+  version "3.4.0"
+  resolved "https://registry.yarnpkg.com/uuid/-/uuid-3.4.0.tgz#b23e4358afa8a202fe7a100af1f5f883f02007ee"
 
 validate-npm-package-license@^3.0.1:
   version "3.0.1"
@@ -5578,15 +5583,17 @@ webpack@^1.14.0:
     watchpack "^0.2.1"
     webpack-core "~0.6.9"
 
-websocket-driver@>=0.3.6, websocket-driver@>=0.5.1:
-  version "0.6.5"
-  resolved "https://registry.yarnpkg.com/websocket-driver/-/websocket-driver-0.6.5.tgz#5cb2556ceb85f4373c6d8238aa691c8454e13a36"
+websocket-driver@>=0.3.6, websocket-driver@>=0.5.1, websocket-driver@^0.7.4:
+  version "0.7.4"
+  resolved "https://registry.yarnpkg.com/websocket-driver/-/websocket-driver-0.7.4.tgz#89ad5295bbf64b480abcba31e4953aca706f5760"
   dependencies:
+    http-parser-js ">=0.5.1"
+    safe-buffer ">=5.1.0"
     websocket-extensions ">=0.1.1"
 
 websocket-extensions@>=0.1.1:
-  version "0.1.1"
-  resolved "https://registry.yarnpkg.com/websocket-extensions/-/websocket-extensions-0.1.1.tgz#76899499c184b6ef754377c2dbb0cd6cb55d29e7"
+  version "0.1.4"
+  resolved "https://registry.yarnpkg.com/websocket-extensions/-/websocket-extensions-0.1.4.tgz#7f8473bc839dfd87608adb95d7eb075211578a42"
 
 whatwg-fetch@>=0.10.0:
   version "2.0.3"