ADD: added new version of protobuf

libs/protobuf/csharp/protos/unittest_issues.proto

@@ -59,12 +59,10 @@ message NegativeEnumMessage {
 // Decorate fields with [deprecated=true] as [System.Obsolete]
 
 message DeprecatedChild {
-    option deprecated = true;
 }
 
 enum DeprecatedEnum {
-    option deprecated = true;
-    DEPRECATED_ZERO = 0 [deprecated = true];
+    DEPRECATED_ZERO = 0;
     one = 1;
 }
 
@@ -171,20 +169,4 @@ message OneofWithNoneName {
     string x = 1;
     string y = 2;
   }
-}
-
-// Issue 8810
-message DisambiguateCommonMembers {
-  int32 disambiguate_common_members = 1;
-  int32 types = 2;
-  int32 descriptor = 3;
-  int32 equals = 4;
-  int32 to_string = 5;
-  int32 get_hash_code = 6;
-  int32 write_to = 7;
-  int32 clone = 8;
-  int32 calculate_size = 9;
-  int32 merge_from = 10;
-  int32 on_construction = 11;
-  int32 parser = 12;
-}
+}