Bump xterm from 2.4.0 to 3.8.1 (argoproj#45)

Author: dependabot[bot]

package.json

@@ -56,7 +56,7 @@
         "webpack-cli": "^3.3.5",
         "winston": "^3.1.0",
         "ws": "^4.0.0",
-        "xterm": "2.4.0",
+        "xterm": "3.8.1",
         "yamljs": "^0.3.0",
         "yargs": "^11.0.0"
     },

yarn.lock

@@ -11381,9 +11381,10 @@ xtend@^4.0.0, xtend@^4.0.1, xtend@~4.0.1:
   version "4.0.1"
   resolved "https://registry.yarnpkg.com/xtend/-/xtend-4.0.1.tgz#a5c6d532be656e23db820efb943a1f04998d63af"
 
-[email protected]:
-  version "2.4.0"
-  resolved "https://registry.yarnpkg.com/xterm/-/xterm-2.4.0.tgz#d70227993b74323e36495ab9c7bdee0bc8d0dbba"
+[email protected]:
+  version "3.8.1"
+  resolved "https://registry.yarnpkg.com/xterm/-/xterm-3.8.1.tgz#0beabaccdc23bd3ab2397c5129ed9b06b0abb167"
+  integrity sha512-M8bKuibUOr07zReT+2XWQgwoHvBZpi8rkuiYMY+xstmMjfxtb3BgCTQMesmi2WEtmXQu6vIw6rg0v736KkLtQQ==
 
 y18n@^3.2.1:
   version "3.2.1"