chore(deps): update composer:2 docker digest to 21c99a2
chore(deps): update composer:2 docker digest to 21c99a2

pmattmann/ecamp3,usu/ecamp3,pmattmann/ecamp3,ecamp/ecamp3,usu/ecamp3,ecamp/ecamp3,pmattmann/ecamp3,usu/ecamp3,usu/ecamp3,ecamp/ecamp3,ecamp/ecamp3,pmattmann/ecamp3