Update dependency gulp-if to v3

[renovate-bot]

This PR contains the following updates:

Package	Type	Update	Change
gulp-if	devDependencies	major	2.0.2 -> 3.0.0

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Release Notes

robrich/gulp-if

### [`v3.0.0`](https://togithub.com/robrich/gulp-if/compare/2.0.2...3.0.0) [Compare Source](https://togithub.com/robrich/gulp-if/compare/2.0.2...3.0.0)

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