Bump spotbugs from 4.3.0 to 4.4.0

Bumps [spotbugs](https://github.com/spotbugs/spotbugs) from 4.3.0 to 4.4.0.
- [Release notes](https://github.com/spotbugs/spotbugs/releases)
- [Changelog](https://github.com/spotbugs/spotbugs/blob/master/CHANGELOG.md)
- [Commits](spotbugs/spotbugs@4.3.0...4.4.0)

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

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

pom.xml

@@ -57,7 +57,7 @@
     <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
     <checkstyle.plugin.version>3.1.2</checkstyle.plugin.version>
     <spotbugs.plugin.version>4.3.0</spotbugs.plugin.version>
-    <spotbugs.impl.version>4.3.0</spotbugs.impl.version>
+    <spotbugs.impl.version>4.4.0</spotbugs.impl.version>
 
     <!-- Commons Release Plugin -->
     <commons.bc.version>1.0-alpha1</commons.bc.version>