Fix db_version juggling during non-multisite tests.

Continuing with the "code is poetry" theme after [34719], we need to continue
to update the option in the database on non-multisite in this
`wp_insert_term()` test.

See #31130.
Built from https://develop.svn.wordpress.org/trunk@34720


git-svn-id: http://core.svn.wordpress.org/trunk@34684 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.4-alpha-34719';
+$wp_version = '4.4-alpha-34720';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.