Update dependency com.diffplug.spotless to v8.7.0

Author: solrbot

gradle/libs.versions.toml

@@ -78,7 +78,7 @@ compose = "1.11.1"
 cuvs-java = "26.06.0"
 cuvs-lucene = "25.12.0"
 decompose = "3.5.0"
-diffplug-spotless = "8.3.0"
+diffplug-spotless = "8.7.0"
 # @keep Use for dockerfile JRE version
 dockerfile-baseimage-java = "25"
 dropwizard-metrics = "4.2.39"