Very short margin on OAuth token refresh

[vicdelfant]

It seems that an access token is only refreshed if it actually expired already, or will expire within the next 1 second:

pipedrive/src/PipedriveToken.php

Line 125 in cc5fee0

return (int) $this->expiresAt - time() < 1;

This seems to be a very short window given that there can easily be a time difference between systems. Is there a specific reason that this was set to such a short timeframe, or would it be okay to submit a PR to change it to a minute? With the access tokens being valid for 1 hour, that's still plenty of margin.

[IsraelOrtuno]

Changing it to a minute would make sense to me, happy to submit a PR?