Update dependency laravel-mix to v6.0.44

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
laravel-mix	6.0.43 -> 6.0.44

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Release Notes

JeffreyWay/laravel-mix

### [`v6.0.44`](https://togithub.com/JeffreyWay/laravel-mix/compare/v6.0.43...a12adab669e758e28927a89d880bba582d7889b2) [Compare Source](https://togithub.com/JeffreyWay/laravel-mix/compare/v6.0.43...a12adab669e758e28927a89d880bba582d7889b2)

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