BAU: Bump com.diffplug.spotless from 8.4.0 to 8.5.1

Bumps com.diffplug.spotless from 8.4.0 to 8.5.1.

---
updated-dependencies:
- dependency-name: com.diffplug.spotless
  dependency-version: 8.5.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -2,7 +2,7 @@
 # plugin versions
 googleJavaFormat = "1.19.2"
 maven_publish = "0.36.0"
-spotless = "8.4.0"
+spotless = "8.5.1"
 sonarqube = "7.2.3.7755"
 
 # library versions