dotenv upgrade caused problems

[jordansissel]

Related:

• https://github.com/jordansissel/fpm/issues/1918
• https://github.com/bkeepers/dotenv/issues/457
• https://github.com/jordansissel/pleaserun/issues/153

pleaserun is probably not used much (if I had to guess). Further fpm doesn't even use the part of pleaserun that invokes dotenv:

https://github.com/jordansissel/pleaserun/blob/fb79910a2dcdb26c463b02ce65d27bd34cbbdfdd/lib/pleaserun/platform/base.rb#L239

The feature in pleaserun that invokes dotenv is when someone sets the --environment-file flag when running the pleaserun command-line tool. Looking at the fpm code using pleaserun, I'm pretty sure this feature is not used in fpm and it is safe to isolate away to prevent future fpm users having issues.

Proposal: In pleaserun, either remove dotenv dependency or isolate the require "dotenv/parser" call to only load dotenv when it is needed instead of at startup.