Update dependency com.diffplug.spotless to v8.8.0 (#942) #59

Job	Run time
Build scip-java CLI	4m 36s
maven-java17-spring-boot	2m 54s
gradle-java21-readiness	1m 42s
gradle-kotlin-okio	4m 33s
gradle-mixed-okio-jmh	3m 15s
gradle-kotlin-flowext	3m 14s
maven-java25-demo	2m 48s
maven-kotlin-json-kotlin-maven	1m 50s
bazel-java-examples	2m 2s
	26m 54s

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