update apiVersionExpected

src/environments/environment.build.ts

@@ -4,5 +4,5 @@ export const environment = {
   production: false,
   testcenterUrl: '/',
   appPublisher: 'IQB - Institut zur Qualitätsentwicklung im Bildungswesen',
-  apiVersionExpected: '3.0.1'
+  apiVersionExpected: '4.0.0'
 };

src/environments/environment.prod.ts

@@ -4,5 +4,5 @@ export const environment = {
   production: true,
   testcenterUrl: '/api/',
   appPublisher: 'IQB - Institut zur Qualitätsentwicklung im Bildungswesen',
-  apiVersionExpected: '3.0.1'
+  apiVersionExpected: '4.0.0'
 };