Update dependency argon2 to ^0.28.0

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
argon2	^0.27.2 -> ^0.28.0

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Release Notes

ranisalt/node-argon2

### [`v0.28.2`](https://togithub.com/ranisalt/node-argon2/releases/v0.28.2) [Compare Source](https://togithub.com/ranisalt/node-argon2/compare/v0.28.1...v0.28.2) See [#​296](https://togithub.com/ranisalt/node-argon2/issues/296) for more info ### [`v0.28.1`](https://togithub.com/ranisalt/node-argon2/releases/v0.28.1) [Compare Source](https://togithub.com/ranisalt/node-argon2/compare/v0.28.0...v0.28.1) Since node-gyp was updated, it was requiring Python 3 instead of Python 2 (finally!). This release fixes the build process. Fixes [#​301](https://togithub.com/ranisalt/node-argon2/issues/301) ### [`v0.28.0`](https://togithub.com/ranisalt/node-argon2/releases/v0.28.0) [Compare Source](https://togithub.com/ranisalt/node-argon2/compare/v0.27.2...v0.28.0) Drops support for Node 10.x and Ubuntu 16.04, upgrade to Node 12.x and Ubuntu 18.04 if you need the latest updates. Older versions do not provide required features for node-argon2 to work properly. Solves [#​300](https://togithub.com/ranisalt/node-argon2/issues/300)

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