[PM-11249] Update cipher revision date when an attachment is added or deleted (#4873)

* update the cipher revision date when an attachment is added or deleted

* store the updated cipher in the DB when an attachment is altered

* return cipher from delete attachment endpoint

src/Core/Vault/Models/Data/DeleteAttachmentReponseData.cs

@@ -0,0 +1,13 @@
+using Bit.Core.Vault.Entities;
+
+namespace Bit.Core.Vault.Models.Data;
+
+public class DeleteAttachmentResponseData
+{
+    public Cipher Cipher { get; set; }
+
+    public DeleteAttachmentResponseData(Cipher cipher)
+    {
+        Cipher = cipher;
+    }
+}