Bump com.github.spotbugs:spotbugs-maven-plugin from 4.9.7.0 to 4.9.8.1

Bumps [com.github.spotbugs:spotbugs-maven-plugin](https://github.com/spotbugs/spotbugs-maven-plugin) from 4.9.7.0 to 4.9.8.1.
- [Release notes](https://github.com/spotbugs/spotbugs-maven-plugin/releases)
- [Commits](spotbugs/spotbugs-maven-plugin@spotbugs-maven-plugin-4.9.7.0...spotbugs-maven-plugin-4.9.8.1)

---
updated-dependencies:
- dependency-name: com.github.spotbugs:spotbugs-maven-plugin
  dependency-version: 4.9.8.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

assertj-mail/pom.xml

@@ -158,7 +158,7 @@
         <plugin>
           <groupId>com.github.spotbugs</groupId>
           <artifactId>spotbugs-maven-plugin</artifactId>
-          <version>4.9.7.0</version>
+          <version>4.9.8.1</version>
         </plugin>
         <plugin>
           <groupId>org.jacoco</groupId>