These have been committed into DonationInterface (by Translation updater bot) but still need to be deployed to the sites.
In case it's helpful, these are the tags that have had languages added:
MediaWiki:Donate interface-cc-form-header-personal/lv
MediaWiki:Donate interface-donate-click/lv
MediaWiki:Donate interface-problemsdonating/lv
MediaWiki:Donate interface-tax-info/lv
MediaWiki:Donate interface-faqs/sk
MediaWiki:Donate interface-tax-info/sk