Add SHA256 to FileData (#837)

Author: qiao9580

Diff for: NGitLab/Models/FileData.cs

@@ -21,6 +21,9 @@ public class FileData
     [JsonPropertyName("content")]
     public string Content { get; set; }
 
+    [JsonPropertyName("content_sha256")]
+    public string ContentSha256 { get; set; }
+
     [JsonPropertyName("ref")]
     public string Ref { get; set; }
 

Diff for: NGitLab/PublicAPI.Unshipped.txt

@@ -1912,6 +1912,8 @@ NGitLab.Models.FileData.CommitId.get -> string
 NGitLab.Models.FileData.CommitId.set -> void
 NGitLab.Models.FileData.Content.get -> string
 NGitLab.Models.FileData.Content.set -> void
+NGitLab.Models.FileData.ContentSha256.get -> string
+NGitLab.Models.FileData.ContentSha256.set -> void
 NGitLab.Models.FileData.DecodedContent.get -> string
 NGitLab.Models.FileData.Encoding.get -> string
 NGitLab.Models.FileData.Encoding.set -> void