grafana: Fix umami weekly users query sorting

values/umami/queries/weekly.sql

@@ -15,7 +15,8 @@ WHERE
 	AND s.distinct_id IS NOT NULL
 	AND substring(s.distinct_id SIMILAR '%#"@%#"' ESCAPE '#') <> '@oceanbox.io'
 GROUP BY
-	week
+  week
 ORDER BY
-	week
+  split_part(CONCAT(EXTRACT(YEAR FROM w.created_at), '-', EXTRACT(WEEK FROM w.created_at)), '-', 1)::int,
+  split_part(CONCAT(EXTRACT(YEAR FROM w.created_at), '-', EXTRACT(WEEK FROM w.created_at)), '-', 2)::int
 	;