Bump spotbugs-maven-plugin from 4.4.1 to 4.4.2.1 (#123)

Bumps [spotbugs-maven-plugin](https://github.com/spotbugs/spotbugs-maven-plugin) from 4.4.1 to 4.4.2.1.
- [Release notes](https://github.com/spotbugs/spotbugs-maven-plugin/releases)
- [Commits](spotbugs/spotbugs-maven-plugin@spotbugs-maven-plugin-4.4.1...spotbugs-maven-plugin-4.4.2.1)

---
updated-dependencies:
- dependency-name: com.github.spotbugs:spotbugs-maven-plugin
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

pom.xml

@@ -247,7 +247,7 @@
     <commons.distSvnStagingUrl>scm:svn:https://dist.apache.org/repos/dist/dev/commons/${commons.componentid}</commons.distSvnStagingUrl>
     <commons.releaseManagerName>Rob Tompkins</commons.releaseManagerName>
     <commons.releaseManagerKey>B6E73D84EA4FCC47166087253FAAD2CD5ECBB314</commons.releaseManagerKey>
-    <spotbugs.plugin.version>4.4.1</spotbugs.plugin.version>
+    <spotbugs.plugin.version>4.4.2.1</spotbugs.plugin.version>
     <spotbugs.impl.version>4.4.1</spotbugs.impl.version>
     <checkstyle.plugin.version>3.1.2</checkstyle.plugin.version>