Update dependency net.fabricmc.fabric-api:fabric-api to v0.100.8+1.21

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
net.fabricmc.fabric-api:fabric-api (source)	0.100.7+1.21 -> 0.100.8+1.21

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[!WARNING] Some dependencies could not be looked up. Check the warning logs for more information.

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Release Notes

FabricMC/fabric (net.fabricmc.fabric-api:fabric-api)

### [`v0.100.8+1.21`](https://togithub.com/FabricMC/fabric/releases/tag/0.100.8%2B1.21): [1.21] Fabric API 0.100.8+1.21 [Compare Source](https://togithub.com/FabricMC/fabric/compare/0.100.8+1.20.6...0.100.8+1.21) - Bump version (modmuss50) - Use `ConcurrentHashMap` inside `RegistryAttributeImpl` ([#​3970](https://togithub.com/FabricMC/fabric/issues/3970)) (apple502j) ### [`v0.100.8+1.20.6`](https://togithub.com/FabricMC/fabric/releases/tag/0.100.8%2B1.20.6): [1.20.6] Fabric API 0.100.8+1.20.6 [Compare Source](https://togithub.com/FabricMC/fabric/compare/0.100.7+1.21...0.100.8+1.20.6) - Bump version (modmuss50) - Use `ConcurrentHashMap` inside `RegistryAttributeImpl` ([#​3970](https://togithub.com/FabricMC/fabric/issues/3970)) (apple502j)

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Configuration

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