style: fix rustfmt formatting

CI's fmt --check step was failing on an unformatted assert_eq! line.

src/routes/crud.rs

@@ -471,7 +471,10 @@ mod tests {
     fn test_build_update_casts_json_array_to_jsonb() {
         let cols = vec![("tags".into(), serde_json::json!(["a", "b"]))];
         let (sql, _, _) = build_query("PUT", "items", Some("1"), &cols, &[]).unwrap();
-        assert_eq!(sql, "UPDATE items SET tags = $1::jsonb WHERE id = $2 RETURNING *");
+        assert_eq!(
+            sql,
+            "UPDATE items SET tags = $1::jsonb WHERE id = $2 RETURNING *"
+        );
     }
 
     #[test]