chore(deps): Update dependency net.ltgt.gradle:gradle-nullaway-plugin to v2.1.0

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
net.ltgt.gradle:gradle-nullaway-plugin	2.0.0 -> 2.1.0

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Release Notes

tbroyer/gradle-nullaway-plugin (net.ltgt.gradle:gradle-nullaway-plugin)

### [`v2.1.0`](https://redirect.github.com/tbroyer/gradle-nullaway-plugin/releases/tag/v2.1.0) Add metadata to the published POM

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