chore(deps): update dependency com.spotify.fmt:fmt-maven-plugin to v2.21

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
com.spotify.fmt:fmt-maven-plugin	2.20 -> 2.21

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Release Notes

spotify/fmt-maven-plugin (com.spotify.fmt:fmt-maven-plugin)

### [`v2.21`](https://togithub.com/spotify/fmt-maven-plugin/releases/tag/2.21) #### What's Changed - Use 2.19 for formatting code in this repo by [@​klaraward](https://togithub.com/klaraward) in [https://github.com/spotify/fmt-maven-plugin/pull/154](https://togithub.com/spotify/fmt-maven-plugin/pull/154) - Add metadata for Spotify OSS by [@​klaraward](https://togithub.com/klaraward) in [https://github.com/spotify/fmt-maven-plugin/pull/155](https://togithub.com/spotify/fmt-maven-plugin/pull/155) - check release in Central instead of search by [@​hboutemy](https://togithub.com/hboutemy) in [https://github.com/spotify/fmt-maven-plugin/pull/156](https://togithub.com/spotify/fmt-maven-plugin/pull/156) - configure for Reproducible Builds by [@​hboutemy](https://togithub.com/hboutemy) in [https://github.com/spotify/fmt-maven-plugin/pull/157](https://togithub.com/spotify/fmt-maven-plugin/pull/157) - Allow skipping of sourceDirectory or testSourceDirectory by [@​camac](https://togithub.com/camac) in [https://github.com/spotify/fmt-maven-plugin/pull/128](https://togithub.com/spotify/fmt-maven-plugin/pull/128) - \[Snyk] Upgrade org.apache.maven.plugin-tools:maven-plugin-annotations from 3.4 to 3.7.1 by [@​snyk-bot](https://togithub.com/snyk-bot) in [https://github.com/spotify/fmt-maven-plugin/pull/162](https://togithub.com/spotify/fmt-maven-plugin/pull/162) - \[Snyk] Upgrade io.norberg:auto-matter from 0.25.1 to 0.26.1 by [@​snyk-bot](https://togithub.com/snyk-bot) in [https://github.com/spotify/fmt-maven-plugin/pull/163](https://togithub.com/spotify/fmt-maven-plugin/pull/163) - \[Snyk] Upgrade org.apache.maven:maven-plugin-api from 3.8.4 to 3.8.7 by [@​snyk-bot](https://togithub.com/snyk-bot) in [https://github.com/spotify/fmt-maven-plugin/pull/164](https://togithub.com/spotify/fmt-maven-plugin/pull/164) - \[Snyk] Upgrade org.apache.maven.plugin-tools:maven-plugin-annotations from 3.7.1 to 3.8.1 by [@​perploug](https://togithub.com/perploug) in [https://github.com/spotify/fmt-maven-plugin/pull/169](https://togithub.com/spotify/fmt-maven-plugin/pull/169) - \[Snyk] Upgrade io.norberg:auto-matter from 0.26.1 to 0.26.2 by [@​perploug](https://togithub.com/perploug) in [https://github.com/spotify/fmt-maven-plugin/pull/173](https://togithub.com/spotify/fmt-maven-plugin/pull/173) - \[Snyk] Upgrade org.apache.maven.plugin-tools:maven-plugin-annotations from 3.8.1 to 3.8.2 by [@​snyk-bot](https://togithub.com/snyk-bot) in [https://github.com/spotify/fmt-maven-plugin/pull/174](https://togithub.com/spotify/fmt-maven-plugin/pull/174) - Bump org.apache.maven:maven-core from 3.3.9 to 3.8.1 by [@​dependabot](https://togithub.com/dependabot) in [https://github.com/spotify/fmt-maven-plugin/pull/177](https://togithub.com/spotify/fmt-maven-plugin/pull/177) - \[Snyk] Upgrade org.apache.maven:maven-plugin-api from 3.8.7 to 3.9.0 by [@​snyk-bot](https://togithub.com/snyk-bot) in [https://github.com/spotify/fmt-maven-plugin/pull/167](https://togithub.com/spotify/fmt-maven-plugin/pull/167) - Support java 21 by [@​caesar-ralf](https://togithub.com/caesar-ralf) in [https://github.com/spotify/fmt-maven-plugin/pull/179](https://togithub.com/spotify/fmt-maven-plugin/pull/179) #### New Contributors - [@​hboutemy](https://togithub.com/hboutemy) made their first contribution in [https://github.com/spotify/fmt-maven-plugin/pull/156](https://togithub.com/spotify/fmt-maven-plugin/pull/156) - [@​caesar-ralf](https://togithub.com/caesar-ralf) made their first contribution in [https://github.com/spotify/fmt-maven-plugin/pull/179](https://togithub.com/spotify/fmt-maven-plugin/pull/179) **Full Changelog**: https://github.com/spotify/fmt-maven-plugin/compare/2.19.0...2.21

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