chore: upgrade ws to 7.1.1

Signed-off-by: BoHong Li <raccoon@hackmd.io>

Author: a60814billy

package.json

@@ -142,7 +142,7 @@
     "visibilityjs": "~2.0.2",
     "viz.js": "~2.1.2",
     "winston": "~3.2.1",
-    "ws": "~6.0.0",
+    "ws": "~7.1.1",
     "wurl": "~2.5.3",
     "xss": "~1.0.6"
   },

yarn.lock

@@ -1775,6 +1775,11 @@ async-each@^1.0.1:
   resolved "https://registry.yarnpkg.com/async-each/-/async-each-1.0.2.tgz#8b8a7ca2a658f927e9f307d6d1a42f4199f0f735"
   integrity sha512-6xrbvN0MOBKSJDdonmSSz2OwFSgxRaVtBDes26mj9KIGtDo+g9xosFRSC+i1gQh2oAN/tQ62AI/pGZGQjVOiRg==
 
+async-limiter@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/async-limiter/-/async-limiter-1.0.1.tgz#dd379e94f0db8310b08291f9d64c3209766617fd"
+  integrity sha512-csOlWGAcRFJaI6m+F2WKdnMKr4HhdhFVBk0H/QbJFMCr+uO2kwohwXQPxw/9OCxp05r5ghVBFSyioixx3gfkNQ==
+
 async-limiter@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/async-limiter/-/async-limiter-1.0.0.tgz#78faed8c3d074ab81f22b4e985d79e8738f720f8"
@@ -13452,20 +13457,20 @@ ws@^5.2.0:
   dependencies:
     async-limiter "~1.0.0"
 
-ws@~6.0.0:
-  version "6.0.0"
-  resolved "https://registry.yarnpkg.com/ws/-/ws-6.0.0.tgz#eaa494aded00ac4289d455bac8d84c7c651cef35"
-  integrity sha512-c2UlYcAZp1VS8AORtpq6y4RJIkJ9dQz18W32SpR/qXGfLDZ2jU4y4wKvvZwqbi7U6gxFQTeE+urMbXU/tsDy4w==
-  dependencies:
-    async-limiter "~1.0.0"
-
 ws@~6.1.0:
   version "6.1.4"
   resolved "https://registry.yarnpkg.com/ws/-/ws-6.1.4.tgz#5b5c8800afab925e94ccb29d153c8d02c1776ef9"
   integrity sha512-eqZfL+NE/YQc1/ZynhojeV8q+H050oR8AZ2uIev7RU10svA9ZnJUddHcOUZTJLinZ9yEfdA2kSATS2qZK5fhJA==
   dependencies:
     async-limiter "~1.0.0"
 
+ws@~7.1.1:
+  version "7.1.1"
+  resolved "https://registry.yarnpkg.com/ws/-/ws-7.1.1.tgz#f9942dc868b6dffb72c14fd8f2ba05f77a4d5983"
+  integrity sha512-o41D/WmDeca0BqYhsr3nJzQyg9NF5X8l/UdnFNux9cS3lwB+swm8qGWX5rn+aD6xfBU3rGmtHij7g7x6LxFU3A==
+  dependencies:
+    async-limiter "^1.0.0"
+
 wurl@~2.5.3:
   version "2.5.3"
   resolved "https://registry.yarnpkg.com/wurl/-/wurl-2.5.3.tgz#79ff7c4d8c6584cb46d239517ecac334380af7fd"