Since "sokil/php-isocodes" is a dependency of our repository already, it
makes sense to use it as a source of currency codes instead of keeping a
list of currencies ourselves.
By using that library, we can also validate currency codes using
different sets.
Signed-off-by: Henrique Moody <henriquemoody@gmail.com>
We have three workflows that automatically update the code. They are
using version 2.0 as a base to create their changes. We need to update
that because the last supported version is 2.1.
Since I do not think it is a good idea to change code every time a new
MINOR version is released, I moved that value to a repository secret.
Signed-off-by: Henrique Moody <henriquemoody@gmail.com>