chore: bump @grafana/create-plugin configuration to 5.26.4 (#2082)

Bumps
[`@grafana/create-plugin`](https://github.com/grafana/plugin-tools/tree/main/packages/create-plugin)
configuration from 4.2.1 to 5.26.4.

**Notes for reviewer:**
This is an auto-generated PR which ran `@grafana/create-plugin update`.
Please consult the create-plugin
[CHANGELOG.md](https://github.com/grafana/plugin-tools/blob/main/packages/create-plugin/CHANGELOG.md)
to understand what may have changed.
Please review the changes thoroughly before merging.

---------

Co-authored-by: grafana-plugins-platform-bot[bot] <144369747+grafana-plugins-platform-bot[bot]@users.noreply.github.com>
Co-authored-by: Zoltán Bedi <zoltan.bedi@gmail.com>

pkg/zabbix/methods.go

@@ -383,9 +383,10 @@ func (ds *Zabbix) GetAllItems(ctx context.Context, hostids []string, appids []st
 	}
 
 	filter := params["filter"].(map[string]interface{})
-	if itemtype == "num" {
+	switch itemtype {
+	case "num":
 		filter["value_type"] = []int{0, 3}
-	} else if itemtype == "text" {
+	case "text":
 		filter["value_type"] = []int{1, 2, 4}
 	}