MM-10352: Add locking incoming webhooks to a single channel. (#8835)

store/sqlstore/upgrade.go

@@ -427,6 +427,8 @@ func UpgradeDatabaseToVersion410(sqlStore SqlStore) {
 func UpgradeDatabaseToVersion50(sqlStore SqlStore) {
 	// TODO: Uncomment following condition when version 3.10.0 is released
 	//if shouldPerformUpgrade(sqlStore, VERSION_4_10_0, VERSION_5_0_0) {
+	sqlStore.CreateColumnIfNotExists("IncomingWebhooks", "ChannelLocked", "boolean", "boolean", "0")
+
 	//	saveSchemaVersion(sqlStore, VERSION_5_0_0)
 	//}
 }