Update layoutlib to v15 (major)

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
com.android.tools.layoutlib:layoutlib-runtime (source)	14.0.9 -> 15.0.4
com.android.tools.layoutlib:layoutlib-resources (source)	14.0.9 -> 15.0.4
com.android.tools.layoutlib:layoutlib (source)	14.0.9 -> 15.0.4

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