Update api files (#675)

Author: kurnakovv

api/OpenAI.net8.0.cs

@@ -1970,6 +1970,7 @@ public class ChatOutputTokenUsageDetails : IJsonModel<ChatOutputTokenUsageDetail
         public static ChatReasoningEffortLevel High { get; }
         public static ChatReasoningEffortLevel Low { get; }
         public static ChatReasoningEffortLevel Medium { get; }
+        public static ChatReasoningEffortLevel Minimal { get; }
         public readonly bool Equals(ChatReasoningEffortLevel other);
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override readonly bool Equals(object obj);
@@ -5641,6 +5642,7 @@ public class ResponseOutputTokenUsageDetails : IJsonModel<ResponseOutputTokenUsa
         public static ResponseReasoningEffortLevel High { get; }
         public static ResponseReasoningEffortLevel Low { get; }
         public static ResponseReasoningEffortLevel Medium { get; }
+        public static ResponseReasoningEffortLevel Minimal { get; }
         public readonly bool Equals(ResponseReasoningEffortLevel other);
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override readonly bool Equals(object obj);

api/OpenAI.netstandard2.0.cs

@@ -1724,6 +1724,7 @@ public class ChatOutputTokenUsageDetails : IJsonModel<ChatOutputTokenUsageDetail
         public static ChatReasoningEffortLevel High { get; }
         public static ChatReasoningEffortLevel Low { get; }
         public static ChatReasoningEffortLevel Medium { get; }
+        public static ChatReasoningEffortLevel Minimal { get; }
         public readonly bool Equals(ChatReasoningEffortLevel other);
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override readonly bool Equals(object obj);
@@ -4988,6 +4989,7 @@ public class ResponseOutputTokenUsageDetails : IJsonModel<ResponseOutputTokenUsa
         public static ResponseReasoningEffortLevel High { get; }
         public static ResponseReasoningEffortLevel Low { get; }
         public static ResponseReasoningEffortLevel Medium { get; }
+        public static ResponseReasoningEffortLevel Minimal { get; }
         public readonly bool Equals(ResponseReasoningEffortLevel other);
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override readonly bool Equals(object obj);