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/webhook_store.go

@@ -47,7 +47,7 @@ func NewSqlWebhookStore(sqlStore SqlStore, metrics einterfaces.MetricsInterface)
 		table.ColMap("ChannelId").SetMaxSize(26)
 		table.ColMap("TeamId").SetMaxSize(26)
 		table.ColMap("DisplayName").SetMaxSize(64)
-		table.ColMap("Description").SetMaxSize(128)
+		table.ColMap("Description").SetMaxSize(500)
 
 		tableo := db.AddTableWithName(model.OutgoingWebhook{}, "OutgoingWebhooks").SetKeys(false, "Id")
 		tableo.ColMap("Id").SetMaxSize(26)
@@ -58,7 +58,7 @@ func NewSqlWebhookStore(sqlStore SqlStore, metrics einterfaces.MetricsInterface)
 		tableo.ColMap("TriggerWords").SetMaxSize(1024)
 		tableo.ColMap("CallbackURLs").SetMaxSize(1024)
 		tableo.ColMap("DisplayName").SetMaxSize(64)
-		tableo.ColMap("Description").SetMaxSize(128)
+		tableo.ColMap("Description").SetMaxSize(500)
 		tableo.ColMap("ContentType").SetMaxSize(128)
 		tableo.ColMap("TriggerWhen").SetMaxSize(1)
 		tableo.ColMap("Username").SetMaxSize(64)