use uuid7

apps/server/src/core/group/dto/add-group-user.dto.ts

@@ -7,6 +7,6 @@ export class AddGroupUserDto extends GroupIdDto {
     message: 'you cannot add more than 50 users at a time',
   })
   @ArrayMinSize(1)
-  @IsUUID(4, { each: true })
+  @IsUUID('all', { each: true })
   userIds: string[];
 }

apps/server/src/core/group/dto/create-group.dto.ts

@@ -21,7 +21,7 @@ export class CreateGroupDto {
   @IsOptional()
   @IsArray()
   @ArrayMaxSize(50)
-  @IsUUID(4, { each: true })
+  @IsUUID('all', { each: true })
   userIds?: string[];
 }