ZeroSSL 429 Too Many Requests

[si458]

ZeroSSL implement a 429 Too Many Requests error if you fire too many requests at once,
even tho the code does one thing after another rather than all at once, you can still hit this limit
what should happen is IF you hot a 429 error, it should retry the request 1-2 seconds later,

im hitting this problem at different stages.
sometimes i hit it when requesting 5 domains, at the newNonce stage
and sometimes i hit it at the after the newNonce but when it tries to get the challenges

cert-manager/cert-manager#5867