Bump com.spotify.fmt:fmt-maven-plugin from 2.20 to 2.21.1

Bumps [com.spotify.fmt:fmt-maven-plugin](https://github.com/spotify/fmt-maven-plugin) from 2.20 to 2.21.1.
- [Release notes](https://github.com/spotify/fmt-maven-plugin/releases)
- [Commits](spotify/fmt-maven-plugin@fmt-maven-plugin-2.20...2.21.1)

---
updated-dependencies:
- dependency-name: com.spotify.fmt:fmt-maven-plugin
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

pom.xml

@@ -76,7 +76,7 @@
     <version.junit>5.7.0</version.junit>
     <version.mockito>4.10.0</version.mockito>
     <!-- Plugin versions -->
-    <version.fmt-maven-plugin>2.20</version.fmt-maven-plugin>
+    <version.fmt-maven-plugin>2.21.1</version.fmt-maven-plugin>
     <version.githook-maven-plugin>1.0.5</version.githook-maven-plugin>
     <version.maven-gpg-plugin>3.1.0</version.maven-gpg-plugin>
     <version.maven-jacoco-plugin>0.8.9</version.maven-jacoco-plugin>