Update dependency dotenv to v8.2.0

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
dotenv	devDependencies	minor	8.1.0 -> 8.2.0

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Release Notes

motdotla/dotenv

### [`v8.2.0`](https://togithub.com/motdotla/dotenv/blob/master/CHANGELOG.md#​820httpsgithubcommotdotladotenvcomparev810v820-2019-10-16) [Compare Source](https://togithub.com/motdotla/dotenv/compare/v8.1.0...v8.2.0)

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[tiftran]

bors r+

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