chore(deps): update plugin com.diffplug.spotless to v6.12.1#177

BFergerson merged 2 commits intomastersourceplusplus/probe-jvm:masterfrom

renovate/com.diffplug.spotless-6.xsourceplusplus/probe-jvm:renovate/com.diffplug.spotless-6.xCopy head branch name to clipboard