Update dependency @tryghost/root-utils to ^0.3.0

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@tryghost/root-utils	^0.1.0 -> ^0.3.0

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Release Notes

TryGhost/framework

v0.3.6

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v0.3.5

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v0.3.4

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v0.3.3

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v0.3.2

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v0.3.1

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v0.3.0

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v0.2.2

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v0.2.1

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v0.2.0

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Configuration

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