Bump com.github.spotbugs:spotbugs-maven-plugin from 4.8.6.4 to 4.8.6.6

Bumps [com.github.spotbugs:spotbugs-maven-plugin](https://github.com/spotbugs/spotbugs-maven-plugin) from 4.8.6.4 to 4.8.6.6.
- [Release notes](https://github.com/spotbugs/spotbugs-maven-plugin/releases)
- [Commits](spotbugs/spotbugs-maven-plugin@spotbugs-maven-plugin-4.8.6.4...spotbugs-maven-plugin-4.8.6.6)

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

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

pom.xml

@@ -57,7 +57,7 @@
         <maven.source.plugin.version>3.3.1</maven.source.plugin.version>
         <maven.jar.plugin.version>3.0.2</maven.jar.plugin.version>
         <maven.github.release.plugin.version>1.6.0</maven.github.release.plugin.version>
-        <com.github.spotbugs.plugin.version>4.8.6.4</com.github.spotbugs.plugin.version>
+        <com.github.spotbugs.plugin.version>4.8.6.6</com.github.spotbugs.plugin.version>
         <maven.jxr.plugin.version>3.5.0</maven.jxr.plugin.version>
         <maven.enforcer.plugin.version>3.5.0</maven.enforcer.plugin.version>
         <maven.gpg.plugin.version>3.2.7</maven.gpg.plugin.version>