Upgrade Nextflow target Java to version 17

[pditommaso]

The goal of this PR is to increase the Java language and runtime compatibility to Java 17.

nextflow/build.gradle

Lines 75 to 82 in 2a71206

	compileJava {
	options.release.set(11)
	}
	tasks.withType(GroovyCompile) {
	sourceCompatibility = '11'
	targetCompatibility = '11'
	}

This was attempted in #5045 however it turns out the Spock tests depends either of gclib or Bytebuddy for bytecode manipulation.

The first does not work on Java 17 (and it's not maintained anymore), the second cause some tests to fail.

The goal of this PR is to solve the dependency issue and allow targeting Java 17