Update xterm js dependency to latest stable 3.X version

changelogs/unreleased/128-update-xterm.yml

+---
+title: Update xterm js dependency to latest stable 3.x version
+merge_request:
+author:
+type: security

package.json

@@ -147,7 +147,7 @@
     "webpack-cli": "^3.3.11",
     "webpack-stats-plugin": "^0.3.1",
     "worker-loader": "^2.0.0",
-    "xterm": "^3.5.0"
+    "xterm": "3.14.5"
   },
   "devDependencies": {
     "@babel/plugin-transform-modules-commonjs": "^7.8.3",

yarn.lock

@@ -12265,10 +12265,10 @@ xtend@^4.0.0, xtend@^4.0.1, xtend@~4.0.1:
   resolved "https://registry.yarnpkg.com/xtend/-/xtend-4.0.2.tgz#bb72779f5fa465186b1f438f674fa347fdb5db54"
   integrity sha512-LKYU1iAXJXUgAXn9URjiu+MWhyUXHsvfp7mcuYm9dSUKK0/CjtrUwFAxD82/mCWbtLsGjFIad0wIsod4zrTAEQ==
 
-xterm@^3.5.0:
-  version "3.5.0"
-  resolved "https://registry.yarnpkg.com/xterm/-/xterm-3.5.0.tgz#ba3f464bc5730c9d259ebe62131862224db9ddcc"
-  integrity sha512-IpG3P3gkT0/xDPS0j3igpk92JYlUajaEHk3/EQSUeIRJmPiF2lyham3Xt/GD3o98uOrRluvowjNj0AFeYK+AXQ==
+xterm@3.14.5:
+  version "3.14.5"
+  resolved "https://registry.yarnpkg.com/xterm/-/xterm-3.14.5.tgz#c9d14e48be6873aa46fb429f22f2165557fd2dea"
+  integrity sha512-DVmQ8jlEtL+WbBKUZuMxHMBgK/yeIZwkXB81bH+MGaKKnJGYwA+770hzhXPfwEIokK9On9YIFPRleVp/5G7z9g==
 
 y18n@^3.2.1:
   version "3.2.1"