Not sure if this is because of older .net/libs, but the direct bindin…

…g doesn't work for string collections

src/protagonist/API/Startup.cs

@@ -57,7 +57,12 @@ public void ConfigureServices(IServiceCollection services)
 
         services
             .Configure<NamedQueryTemplateSettings>(configuration)
-            .Configure<DlcsSettings>(configuration.GetSection("DLCS"))
+            .Configure<DlcsSettings>(settings =>
+            {
+                configuration.GetSection("DLCS").Bind(settings);
+                settings.JwtValidIssuers =
+                    configuration.GetSection("DLCS").GetSection("JwtValidIssuers").Get<string[]>();
+            })
             .Configure<CacheSettings>(cachingSection);
 
         var apiSettings = configuration.Get<ApiSettings>();