Bump spotbugs.version from 4.7.3 to 4.8.0

Bumps `spotbugs.version` from 4.7.3 to 4.8.0.

Updates `com.github.spotbugs:spotbugs-annotations` from 4.7.3 to 4.8.0
- [Release notes](https://github.com/spotbugs/spotbugs/releases)
- [Changelog](https://github.com/spotbugs/spotbugs/blob/master/CHANGELOG.md)
- [Commits](spotbugs/spotbugs@4.7.3...4.8.0)

Updates `com.github.spotbugs:spotbugs` from 4.7.3 to 4.8.0
- [Release notes](https://github.com/spotbugs/spotbugs/releases)
- [Changelog](https://github.com/spotbugs/spotbugs/blob/master/CHANGELOG.md)
- [Commits](spotbugs/spotbugs@4.7.3...4.8.0)

---
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

@@ -95,7 +95,7 @@
         <project.build.sourceEncoding>${java.charset}</project.build.sourceEncoding>
         <project.reporting.outputEncoding>${java.charset}</project.reporting.outputEncoding>
         <spotbugs-maven-plugin.version>4.7.3.6</spotbugs-maven-plugin.version>
-        <spotbugs.version>4.7.3</spotbugs.version>
+        <spotbugs.version>4.8.0</spotbugs.version>
         <system-lambda.version>1.2.1</system-lambda.version>
         <taglist-maven-plugin.version>3.0.0</taglist-maven-plugin.version>
         <versions-maven-plugin.version>2.16.1</versions-maven-plugin.version>