Bump com.github.spotbugs from 6.1.13 to 6.4.2

Bumps com.github.spotbugs from 6.1.13 to 6.4.2.

---
updated-dependencies:
- dependency-name: com.github.spotbugs
  dependency-version: 6.4.2
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

build.gradle

@@ -34,7 +34,7 @@ plugins {
     id 'com.dorongold.task-tree' version '4.0.1'
     id 'org.nosphere.apache.rat' version '0.8.1'
     id 'distribution'
-    id 'com.github.spotbugs' version '6.1.13'        // 6.2.0+ requires JDK 11
+    id 'com.github.spotbugs' version '6.4.2'        // 6.2.0+ requires JDK 11
     id 'de.thetaphi.forbiddenapis' version '3.9'
     id 'org.sonarqube' version '4.0.0.2929'
     id 'org.cyclonedx.bom' version '2.3.1'