Update server for existing-terminal fix & 'close' callback responses

Author: pimterry

package.json

@@ -20,7 +20,7 @@
   "author": "Tim Perry",
   "license": "AGPL-3.0-or-later",
   "config": {
-    "httptoolkit-server-version": "1.4.1"
+    "httptoolkit-server-version": "1.4.2"
   },
   "build": {
     "appId": "tech.httptoolkit.desktop",