Bump spotbugs.version from 4.7.3 to 4.8.1

Bumps `spotbugs.version` from 4.7.3 to 4.8.1.

Updates `com.github.spotbugs:spotbugs-annotations` from 4.7.3 to 4.8.1
- [Release notes](https://github.com/spotbugs/spotbugs/releases)
- [Changelog](https://github.com/spotbugs/spotbugs/blob/master/CHANGELOG.md)
- [Commits](spotbugs/spotbugs@4.7.3...4.8.1)

Updates `com.github.spotbugs:spotbugs` from 4.7.3 to 4.8.1
- [Release notes](https://github.com/spotbugs/spotbugs/releases)
- [Changelog](https://github.com/spotbugs/spotbugs/blob/master/CHANGELOG.md)
- [Commits](spotbugs/spotbugs@4.7.3...4.8.1)

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

Signed-off-by: dependabot[bot] <[email protected]>

pom.xml

@@ -56,7 +56,7 @@
     <module.name>${project.groupId}.codingstyle</module.name>
 
     <!-- Project Dependencies Configuration -->
-    <spotbugs.version>4.7.3</spotbugs.version>
+    <spotbugs.version>4.8.1</spotbugs.version>
     <commons.lang.version>3.13.0</commons.lang.version>
     <commons.io.version>2.11.0</commons.io.version>
     <javax.annotation-api.version>1.3.2</javax.annotation-api.version>