Merge pull request #2365 from bcgov/fix/putSchoolSchema

vendor source system code nullable

Author: SodhiA1

backend/src/validations/schools.js

@@ -63,7 +63,7 @@ const putSchoolSchema = object({
     closedDate: date().nullable(),
     canIssueCertificates: boolean().nullable(),
     canIssueTranscripts: boolean().nullable(),
-    vendorSourceSystemCode: string().max(10),
+    vendorSourceSystemCode: string().max(10).nullable(),
     contacts: array().of(schoolContactSchema),
     addresses: array().of(schoolAddressSchema.shape({
       schoolAddressId: string().nullable(),