Bump xterm from 4.12.0 to 4.14.1 (#4206)

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -378,7 +378,7 @@
     "webpack-dev-server": "^3.11.2",
     "webpack-node-externals": "^1.7.2",
     "what-input": "^5.2.10",
-    "xterm": "^4.12.0",
+    "xterm": "^4.14.1",
     "xterm-addon-fit": "^0.5.0"
   }
 }