build(deps): bump com.github.spotbugs from 6.5.8 to 6.5.9

Bumps com.github.spotbugs from 6.5.8 to 6.5.9.

---
updated-dependencies:
- dependency-name: com.github.spotbugs
  dependency-version: 6.5.9
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -57,4 +57,4 @@ shadow = "8.1.1"
 sonarqube = "7.3.1.8318"
 sonatypePublish = "0.1.0"
 spock = "2.4-groovy-4.0"
-spotbugs-plugin = "6.5.8"
+spotbugs-plugin = "6.5.9"