chore(deps): update dependency com.diffplug.spotless to v8 (#388)

Author: renovate[bot]

gradle/libs.versions.toml

@@ -25,7 +25,7 @@ nexusPublish = "2.0.0"
 openai = "3.6.1"
 openrewrite = "7.17.0"
 slf4j = "2.0.17"
-spotless = "7.2.1"
+spotless = "8.0.0"
 spring = "6.2.11"
 spring-ai = "1.0.2"
 system-stubs = "2.1.8"