Bump sockjs from 0.3.19 to 0.3.21 in /twistter-frontend

Bumps [sockjs](https://github.com/sockjs/sockjs-node) from 0.3.19 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/v0.3.19...v0.3.21)

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

README.md

@@ -1,14 +1,2 @@
 # CS307-Team24
 CS307 Team 24 Twistter website
-
-### Images
-<p>
-  <img alt="00.png" src="./screenshots/00.png" width="1000">
-  <img alt="01.png" src="./screenshots/01.png" width="1000">
-  <img alt="02.png" src="./screenshots/02.png" width="1000">
-  <img alt="03.png" src="./screenshots/03.png" width="1000">
-  <img alt="04.png" src="./screenshots/04.png" width="1000">
-  <img alt="05.png" src="./screenshots/05.png" width="1000">
-  <img alt="06.png" src="./screenshots/06.png" width="1000">
-  <img alt="07.png" src="./screenshots/07.png" width="1000">
-</p>

twistter-frontend/package-lock.json

@@ -4240,9 +4240,9 @@
       }
     },
     "hosted-git-info": {
-      "version": "2.8.9",
-      "resolved": "https://registry.npmjs.org/hosted-git-info/-/hosted-git-info-2.8.9.tgz",
-      "integrity": "sha512-mxIDAb9Lsm6DoOJ7xH+5+X4y1LU/4Hi50L9C5sIswK3JzULS4bwk1FvjdBgvYR4bzT4tuUQiC15FE2f5HbLvYw=="
+      "version": "2.8.4",
+      "resolved": "https://registry.npmjs.org/hosted-git-info/-/hosted-git-info-2.8.4.tgz",
+      "integrity": "sha512-pzXIvANXEFrc5oFFXRMkbLPQ2rXRoDERwDLyrcUxGhaZhgP54BBSl9Oheh7Vv0T090cszWBxPjkQQ5Sq1PbBRQ=="
     },
     "html-comment-regex": {
       "version": "1.1.2",
@@ -9150,21 +9150,42 @@
       }
     },
     "sockjs": {
-      "version": "0.3.19",
-      "resolved": "https://registry.npmjs.org/sockjs/-/sockjs-0.3.19.tgz",
-      "integrity": "sha512-V48klKZl8T6MzatbLlzzRNhMepEys9Y4oGFpypBFFn1gLI/QQ9HtLLyWJNbPlwGLelOVOEijUbTTJeLLI59jLw==",
+      "version": "0.3.21",
+      "resolved": "https://registry.npmjs.org/sockjs/-/sockjs-0.3.21.tgz",
+      "integrity": "sha512-DhbPFGpxjc6Z3I+uX07Id5ZO2XwYsWOrYjaSeieES78cq+JaJvVe5q/m1uvjIQhXinhIeCFRH6JgXe+mvVMyXw==",
       "requires": {
-        "faye-websocket": "^0.10.0",
-        "uuid": "^3.0.1"
+        "faye-websocket": "^0.11.3",
+        "uuid": "^3.4.0",
+        "websocket-driver": "^0.7.4"
       },
       "dependencies": {
         "faye-websocket": {
-          "version": "0.10.0",
-          "resolved": "https://registry.npmjs.org/faye-websocket/-/faye-websocket-0.10.0.tgz",
-          "integrity": "sha1-TkkvjQTftviQA1B/btvy1QHnxvQ=",
+          "version": "0.11.3",
+          "resolved": "https://registry.npmjs.org/faye-websocket/-/faye-websocket-0.11.3.tgz",
+          "integrity": "sha512-D2y4bovYpzziGgbHYtGCMjlJM36vAl/y+xUyn1C+FVx8szd1E+86KwVw6XvYSzOP8iMpm1X0I4xJD+QtUb36OA==",
           "requires": {
             "websocket-driver": ">=0.5.1"
           }
+        },
+        "http-parser-js": {
+          "version": "0.5.3",
+          "resolved": "https://registry.npmjs.org/http-parser-js/-/http-parser-js-0.5.3.tgz",
+          "integrity": "sha512-t7hjvef/5HEK7RWTdUzVUhl8zkEu+LlaE0IYzdMuvbSDipxBRpOn4Uhw8ZyECEa808iVT8XCjzo6xmYt4CiLZg=="
+        },
+        "uuid": {
+          "version": "3.4.0",
+          "resolved": "https://registry.npmjs.org/uuid/-/uuid-3.4.0.tgz",
+          "integrity": "sha512-HjSDRw6gZE5JMggctHBcjVak08+KEVhSIiDzFnT9S9aegmp85S/bReBVTb4QTFaRNptJ9kuYaNhnbNEOkbKb/A=="
+        },
+        "websocket-driver": {
+          "version": "0.7.4",
+          "resolved": "https://registry.npmjs.org/websocket-driver/-/websocket-driver-0.7.4.tgz",
+          "integrity": "sha512-b17KeDIQVjvb0ssuSDF2cYXSg2iztliJ4B9WdsuB6J952qCPKmnVq4DyW5motImXHDC1cBT/1UezrJVsKw5zjg==",
+          "requires": {
+            "http-parser-js": ">=0.5.1",
+            "safe-buffer": ">=5.1.0",
+            "websocket-extensions": ">=0.1.1"
+          }
         }
       }
     },