Update Demo App to 23.6.1

Author: GregorBiswanger

ElectronNET.WebApp/electron.manifest.json

@@ -8,8 +8,8 @@
   "build": {
     "appId": "com.electronnetapidemos.app",
     "productName": "ElectronNET API Demos",
-    "copyright": "Copyright � 2019-2021",
-    "buildVersion": "13.5.1",
+    "copyright": "Copyright � 2019-2023",
+    "buildVersion": "23.6.1",
     "compression": "maximum",
     "win": {
       "icon": "Assets/electron.ico",