Bump spotbugs.version from 4.9.3 to 4.9.4

Bumps `spotbugs.version` from 4.9.3 to 4.9.4.

Updates `com.github.spotbugs:spotbugs-annotations` from 4.9.3 to 4.9.4
- [Release notes](https://github.com/spotbugs/spotbugs/releases)
- [Changelog](https://github.com/spotbugs/spotbugs/blob/master/CHANGELOG.md)
- [Commits](spotbugs/spotbugs@4.9.3...4.9.4)

Updates `com.github.spotbugs:spotbugs` from 4.9.3 to 4.9.4
- [Release notes](https://github.com/spotbugs/spotbugs/releases)
- [Changelog](https://github.com/spotbugs/spotbugs/blob/master/CHANGELOG.md)
- [Commits](spotbugs/spotbugs@4.9.3...4.9.4)

---
updated-dependencies:
- dependency-name: com.github.spotbugs:spotbugs-annotations
  dependency-version: 4.9.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: com.github.spotbugs:spotbugs
  dependency-version: 4.9.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

pom.xml

@@ -69,7 +69,7 @@
         <maven-surefire-plugin.version>3.5.3</maven-surefire-plugin.version>
         <git-build-hook-maven-plugin.version>3.5.0</git-build-hook-maven-plugin.version>
         <jacoco.version>0.8.13</jacoco.version>
-        <spotbugs.version>4.9.3</spotbugs.version>
+        <spotbugs.version>4.9.4</spotbugs.version>
         <spotbugs-maven-plugin.version>4.9.3.2</spotbugs-maven-plugin.version>
         <findsecbugs.version>1.14.0</findsecbugs.version> <!-- spotbugs plugin for security audits of web apps -->
         <spotless.version>2.46.1</spotless.version>