Fix one unit test

Author: t-hamano

packages/block-library/src/group/test/__snapshots__/transforms.native.js.snap

@@ -3,7 +3,7 @@
 exports[`Group block transforms to Columns block 1`] = `
 "<!-- wp:columns -->
 <div class="wp-block-columns"><!-- wp:column {"width":"100%"} -->
-<div class="wp-block-column" style="flex-basis:100%"><!-- wp:group -->
+<div class="wp-block-column" style="flex-basis:100%"><!-- wp:group {"anchor":"this-is-another-anchor"} -->
 <div id="this-is-another-anchor" class="wp-block-group"><!-- wp:paragraph -->
 <p>One.</p>
 <!-- /wp:paragraph -->