Update dependency com.diffplug.spotless:spotless-plugin-gradle to v6.23.0#2720

oldergod merged 4 commits intomastersquare/wire:masterfrom

renovate/com.diffplug.spotless-spotless-plugin-gradle-6.xsquare/wire:renovate/com.diffplug.spotless-spotless-plugin-gradle-6.xCopy head branch name to clipboard