Use new Console main class for Groovy 3+

[Vampire]

This change is 

[codecov]

Codecov Report

Merging #1082 into master will increase coverage by 0.13%.
The diff coverage is 95.65%.

@@             Coverage Diff              @@
##             master    #1082      +/-   ##
============================================
+ Coverage        74%   74.14%   +0.13%     
- Complexity     3449     3471      +22     
============================================
  Files           385      385              
  Lines         10660    10677      +17     
  Branches       1301     1307       +6     
============================================
+ Hits           7889     7916      +27     
+ Misses         2309     2300       -9     
+ Partials        462      461       -1

Impacted Files	Coverage Δ	Complexity Δ
...core/src/main/java/spock/util/environment/Jvm.java	91.17% <100%> (+16.17%)	38 <21> (+13)	⬆️
...ockframework/mock/constraint/TargetConstraint.java	93.33% <85.71%> (-6.67%)	8 <1> (+4)
...va/org/spockframework/mock/runtime/MockObject.java	82.85% <0%> (-8.58%)	22% <0%> (-1%)
...org/spockframework/compiler/DeepBlockRewriter.java	78.39% <0%> (+0.61%)	69% <0%> (+1%)	⬆️
...org/spockframework/compiler/SpecialMethodCall.java	88.73% <0%> (+1.4%)	42% <0%> (+1%)	⬆️
...kframework/compiler/AbstractDeepBlockRewriter.java	100% <0%> (+1.47%)	22% <0%> (+1%)	⬆️
...main/java/org/spockframework/compiler/AstUtil.java	62.68% <0%> (+1.49%)	56% <0%> (+2%)	⬆️
...g/spockframework/compiler/InteractionRewriter.java	72.92% <0%> (+2.2%)	52% <0%> (+2%)	⬆️
...kframework/mock/runtime/GroovyMockInterceptor.java	75.75% <0%> (+6.06%)	9% <0%> (+1%)	⬆️

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[szpak]

LGTM, but let's wait with it until #1075 is merged.