Update dependency dotenv to ^8.2.0

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
dotenv	^8.0.0 -> ^8.2.0

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Release Notes

motdotla/dotenv

### [`v8.2.0`](https://togithub.com/motdotla/dotenv/blob/master/CHANGELOG.md#​820-httpsgithubcommotdotladotenvcomparev810v820-2019-10-16) [Compare Source](https://togithub.com/motdotla/dotenv/compare/v8.1.0...v8.2.0) ### [`v8.1.0`](https://togithub.com/motdotla/dotenv/blob/master/CHANGELOG.md#​810-httpsgithubcommotdotladotenvcomparev700v810-2019-08-18) [Compare Source](https://togithub.com/motdotla/dotenv/compare/v8.0.0...v8.1.0) ##### ⚠ BREAKING CHANGES - dropping Node v6 support because end-of-life - Drop support for Node v6 ([#​392](https://togithub.com/motdotla/dotenv/issues/392)) ([2e9636a](https://togithub.com/motdotla/dotenv/commit/2e9636a)), closes [#​392](https://togithub.com/motdotla/dotenv/issues/392)

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