chore(editorconfig): explicit new line at the end of files
chore(editorconfig): explicit new line at the end of files

prettier would somehow remove the new line at the end of composer.json otherwise

OurWorldInData/owid-grapher,OurWorldInData/owid-grapher,OurWorldInData/owid-grapher,OurWorldInData/owid-grapher,OurWorldInData/owid-grapher,owid/owid-grapher,owid/owid-grapher,owid/owid-grapher,owid/owid-grapher,owid/owid-grapher