Adopt new version of maven-plugin-development from GradleX

[nedtwigg]

spotless/plugin-maven/build.gradle

Lines 1 to 7 in f77aead

	import de.benediktritter.maven.plugin.development.task.GenerateHelpMojoSourcesTask
	import de.benediktritter.maven.plugin.development.task.GenerateMavenPluginDescriptorTask
	plugins {
	// https://www.benediktritter.de/maven-plugin-development/#release-history
	id 'de.benediktritter.maven-plugin-development' version '0.4.3'
	}

This plugin has reached 1.0 and now supports configuration cache, which I believe is the last warning remaining in our build. Might require some rework on our part

• https://github.com/gradlex-org/maven-plugin-development/releases/tag/v1.0
• https://github.com/gradlex-org/maven-plugin-development/releases/tag/v1.0.1

PRs welcome!