ValidationException on query with specific fields which includes reserved keywords.

[jagadeesh-00]

Describe the bug

• dynamo-helper query is giving reserved keywords validation exception on passing any reserved keywords in fields of query method.

To Reproduce
Steps to reproduce the behavior:

1. Use Query method of dynamo-helper with specific fields (eg: roles)
2. Try to query
3. Throws ValidationException for querying with reserved keywords.

Expected behavior
Should not throw the exception. Should get the mentioned fields from db, even is is a reserved keyword.

Screenshots

Additional context
Add any other context about the problem here.