Update plugin spotless to v8.5.0 (#5668)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

gradle/libs.versions.toml

@@ -106,5 +106,5 @@ node = { id = "com.github.node-gradle.node", version = "7.1.0" }
 nullaway = { id = "net.ltgt.nullaway", version = "3.0.0" }
 plantuml = { id = "io.freefair.plantuml", version = "9.5.0" }
 shadow = { id = "com.gradleup.shadow", version = "9.4.1" }
-spotless = { id = "com.diffplug.spotless", version = "8.4.0" }
+spotless = { id = "com.diffplug.spotless", version = "8.5.0" }
 spring-antora = { id = "io.spring.antora.generate-antora-yml", version = "0.0.1" }