MM-11703: Update incoming and outgoing webhook description to 500 characters (#9265)

* MM-11703: Update incoming and outgoing webhook description to 500 characters

* MM-11703: Add upgrade code

* MM-11703: Remove MAX_DESCRIPTION_LENGTH constants

* MM-11703: GOFMT

* MM-11703: Move upgrade code to version 5.3

* MM-11703: Comment back upgrade to 5.3.0

* MM-11703: Add API errors back

* MM-11703: Copy-Paste

store/sqlstore/upgrade.go

@@ -486,7 +486,8 @@ func UpgradeDatabaseToVersion52(sqlStore SqlStore) {
 func UpgradeDatabaseToVersion53(sqlStore SqlStore) {
 	// TODO: Uncomment following condition when version 5.3.0 is released
 	// if shouldPerformUpgrade(sqlStore, VERSION_5_2_0, VERSION_5_3_0) {
-
+	sqlStore.AlterColumnTypeIfExists("OutgoingWebhooks", "Description", "varchar(500)", "varchar(500)")
+	sqlStore.AlterColumnTypeIfExists("IncomingWebhooks", "Description", "varchar(500)", "varchar(500)")
 	// 	saveSchemaVersion(sqlStore, VERSION_5_3_0)
 	// }
 }