fix bearer token possibly appearing more than once in auth header (#36)

Signed-off-by: Sebastian Kaupe <kaupe@gonicus.de>

Author: snkaupe

src/app/management-view/management-view.component.ts

@@ -112,7 +112,7 @@ export class ManagementViewComponent implements OnInit{
       this.userData = this.security.userData;
       const token = await firstValueFrom(this.security.getAccessToken());
       this.incidentService.configuration.withCredentials = true;
-      this.incidentService.defaultHeaders = this.incidentService.defaultHeaders.append("Authorization", `Bearer ${token}`);
+      this.incidentService.defaultHeaders = this.incidentService.defaultHeaders.set("Authorization", `Bearer ${token}`);
     });
   }