Aww 2019, your Starmie tears are cute. 
To add to what @quuador has already said, the last new Pichu artwork was actually all the way back in October 2009 with Japan’s SoulSilver Collection set. Pichu has featured on a couple of cards since (shameless blog article plug: pichu.blog/cards-featuring-pichu) but it’s been over a decade since the last new Pichu card was printed with new artwork.
Last September I put together a list of The first 251 Pokémon ordered by last Japanese TCG release and with the exception of Abra and Kadabra (which stopped being printed thanks to Uri Geller), Pichu is top of the list. There are a couple of later generation Pokémon which have even older last release dates though, so I can’t complain too much. I do get sad though looking at every new set only to find that no new Pichu cards have been printed and it makes me die a little inside.