Make updates available in “tags” folder

Hi @mihche,
I noticed you stopped distributing plugin updates in the tags folder since v1.1 (see https://plugins.trac.wordpress.org/browser/invisible-recaptcha/). When using WordPress Packagist one needs to use dev-trunk ("wpackagist-plugin/invisible-recaptcha": "dev-trunk") to get the latest version (currently v1.2.1).
This is considered bad practice because if you commit pre-release changes (i. e. development work) to the trunk folder (that’s what the folder is meant for) this changes would get installed on production sites and thus might break them.

Please consider adding plugin updates to the tag folder! You don’t need to release an plugin update to do this, simple copy trunk to tags/1.2.1.

Thanks!