Pass test for TokenEndpointAuthenticationSigningAlgorithmsSupported

Author: josephdecock

identity-model/src/IdentityModel/Client/Messages/DiscoveryDocumentResponse.cs

@@ -258,8 +258,7 @@ protected override Task InitializeAsync(object? initializationData = null)
     /// Gets the signing algorithms supported by the token endpoint for the signature on the JWT used to authenticate
     /// the client at the token endpoint for the "private_key_jwt" and "client_secret_jwt" authentication methods.
     /// </summary>
-    public IEnumerable<string> TokenEndpointAuthenticationSigningAlgorithmsSupported => [];
-
+    public IEnumerable<string> TokenEndpointAuthenticationSigningAlgorithmsSupported => TryGetStringArray(OidcConstants.Discovery.TokenEndpointAuthSigningAlgorithmsSupported);
 
     /// <summary>
     /// Gets the supported backchannel token delivery modes.

identity-model/test/IdentityModel.Tests/Verifications/PublicApiVerificationTests.VerifyPublicApi.verified.txt

@@ -835,6 +835,7 @@ namespace Duende.IdentityModel.Client
         public System.Collections.Generic.IEnumerable<string> SubjectTypesSupported { get; }
         public string? TokenEndpoint { get; }
         public System.Collections.Generic.IEnumerable<string> TokenEndpointAuthenticationMethodsSupported { get; }
+        public System.Collections.Generic.IEnumerable<string> TokenEndpointAuthenticationSigningAlgorithmsSupported { get; }
         public string? UserInfoEndpoint { get; }
         protected override System.Threading.Tasks.Task InitializeAsync(object? initializationData = null) { }
         public bool? TryGetBoolean(string name) { }
@@ -1445,4 +1446,4 @@ namespace Duende.IdentityModel.Validation
     {
         void Validate(string rawJwtResponse);
     }
-}
+}