v5.56.1

BUG FIXES:

• data-source/aws_cognito_user_pool_client: Fix InvalidParameterException: 2 validation errors detected errors on Read (#38168)
• resource/aws_cognito_user: Fix a bug that caused resource recreation for resources imported with certain import ID formats (#38182)
• resource/aws_cognito_user_pool: Fix runtime error: index out of range [0] with length 0 panic when adding lambda_config (#38184)