Update dependency parse-png to v2

[renovate-bot]

This PR contains the following updates:

Package	Type	Update	Change
parse-png	devDependencies	major	1.1.2 -> 2.1.0

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Release Notes

kevva/parse-png

### [`v2.1.0`](https://togithub.com/kevva/parse-png/releases/v2.1.0) [Compare Source](https://togithub.com/kevva/parse-png/compare/v2.0.0...v2.1.0) - Add TypeScript definition [`c2c0d30`](https://togithub.com/kevva/parse-png/commit/c2c0d30) ### [`v2.0.0`](https://togithub.com/kevva/parse-png/releases/v2.0.0) [Compare Source](https://togithub.com/kevva/parse-png/compare/v1.1.2...v2.0.0) - Require Node.js 10 [`6171817`](https://togithub.com/kevva/parse-png/commit/6171817) - Code style tweaks [`0773f8f`](https://togithub.com/kevva/parse-png/commit/0773f8f) - Meta tweaks ([#​2](https://togithub.com/kevva/parse-png/issues/2)) [`c1d97c3`](https://togithub.com/kevva/parse-png/commit/c1d97c3)

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