corrected PolicyGroupUpdateRequestDto (#1002)

Signed-off-by: sudeep <[email protected]>

partner/policy-management-service/src/main/java/io/mosip/pms/policy/dto/PolicyGroupUpdateRequestDto.java

@@ -16,7 +16,7 @@ public class PolicyGroupUpdateRequestDto {
 	private String name;
 
 	@NotBlank(message="value is empty or null")
-	@Size(min = 1, max = 128, message = "Length should be between 1 and 128 chars")	
+	@Size(min = 1, max = 256, message = "Length should be between 1 and 256 chars")
 	private String desc;
 
 	private Boolean isActive;