fix: allow null for "resume"

Author: maxceem

src/services/JobCandidateProcessorService.js

@@ -101,7 +101,7 @@ processCreate.schema = {
       updatedBy: Joi.string().uuid().allow(null),
       status: Joi.jobCandidateStatus().required(),
       externalId: Joi.string().allow(null),
-      resume: Joi.string().uri()
+      resume: Joi.string().uri().allow(null),
     }).required()
   }).required(),
   transactionId: Joi.string().required()