chore(deps): Update mammoth to v1.5.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
net.kyori:mammoth-test	1.4.0 -> 1.5.0
net.kyori:mammoth	1.4.0 -> 1.5.0

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Release Notes

KyoriPowered/mammoth (net.kyori:mammoth-test)

v1.5.0: mammoth 1.5.0

This is a small release to migrate nullability annotations to JSpecify.

What's Changed

✨ Features

• feat(*): Migrate to JSpecify by @​zml2008 in https://github.com/KyoriPowered/mammoth/pull/82

Other

• chore(build): Bump gradle to 8.14.1, plus foojay plugin by @​zml2008 in https://github.com/KyoriPowered/mammoth/pull/94

Full Changelog: KyoriPowered/mammoth@v1.4.0...v1.5.0

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