------------------
* Upgrade embedded icon set to version 2.1.1.
This includes the new micro icons, which are available with the new ``heroicon_micro`` tags.
See the `upstream changelog <https://github.com/tailwindlabs/heroicons/blob/master/CHANGELOG.md>`__ and `micro icon announcement post <https://tailwindcss.com/blog/heroicons-micro>`__.
(Note: the upstream also added ``data-slot="icon"`` to all icons, with no clear purpose or changelog note.
This has been removed in this package because it’s of unclear utility.
Queried in `this comment <https://github.com/tailwindlabs/heroicons/commit/09740d9c42ff7f0ff0f9f68666d56e4d3f9f7428#commitcomment-135607421>`__.)