debug: update fake old version number to 26.8.0

Signed-off-by: Patrizio Bekerle <patrizio@bekerle.com>

Author: pbek

src/services/updateservice.cpp

@@ -47,7 +47,7 @@ void UpdateService::checkForUpdates(UpdateMode updateMode) {
 
     // check if we want to fake the version number to trigger an update
     if (settings.value(QStringLiteral("Debug/fakeOldVersionNumber")).toBool()) {
-        version = QLatin1String("20.10.0");
+        version = QLatin1String("26.8.0");
         isDebug = true;
     }