[MM-39999] Increase key length in plugin KV store to 150 (#19002)

store/sqlstore/plugin_store.go

@@ -29,7 +29,7 @@ func newSqlPluginStore(sqlStore *SqlStore) store.PluginStore {
 	for _, db := range sqlStore.GetAllConns() {
 		table := db.AddTableWithName(model.PluginKeyValue{}, "PluginKeyValueStore").SetKeys(false, "PluginId", "Key")
 		table.ColMap("PluginId").SetMaxSize(190)
-		table.ColMap("Key").SetMaxSize(50)
+		table.ColMap("Key").SetMaxSize(150)
 		table.ColMap("Value").SetMaxSize(8192)
 	}