Update groovy monorepo (#1901)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [org.apache.groovy:groovy](https://groovy-lang.org)
([source](https://togithub.com/apache/groovy)) | `4.0.18` -> `4.0.19` |
[![age](https://developer.mend.io/api/mc/badges/age/maven/org.apache.groovy:groovy/4.0.19?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
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|
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|
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|
| [org.codehaus.groovy:groovy](https://groovy-lang.org)
([source](https://togithub.com/apache/groovy)) | `3.0.20` -> `3.0.21` |
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gradle/libs.versions.toml

@@ -1,8 +1,8 @@
 [versions]
 asciidoctorj = '2.5.11'
 groovy2 = '2.5.23'
-groovy3 = '3.0.20'
-groovy4 = '4.0.18'
+groovy3 = '3.0.21'
+groovy4 = '4.0.19'
 jacoco = '0.8.11'
 junit = '5.10.2'
 asm = '9.6'

spock-specs/src/test/groovy/org/spockframework/smoke/ast/AstSpec.groovy

@@ -15,17 +15,16 @@
 
 package org.spockframework.smoke.ast
 
+import org.codehaus.groovy.control.CompilePhase
 import org.spockframework.EmbeddedSpecification
 import org.spockframework.runtime.GroovyRuntimeUtil
 import org.spockframework.specs.extension.SpockSnapshotter
-import spock.lang.Snapshot
 import org.spockframework.util.GroovyReleaseInfo
 import org.spockframework.util.VersionNumber
 import spock.lang.Requires
+import spock.lang.Snapshot
 import spock.util.Show
 
-import org.codehaus.groovy.control.CompilePhase
-
 class AstSpec extends EmbeddedSpecification {
   @Snapshot(extension = 'groovy')
   SpockSnapshotter snapshotter
@@ -134,6 +133,10 @@ class Foo {
   }
 
   def "enums"() {
+    given:
+    // groovy 4 renders differently
+    def snapshotId = GroovyRuntimeUtil.groovy4orNewer ? "groovy4" : ""
+
     when:
     def result = compiler.transpile('''
     enum Alpha {
@@ -144,7 +147,7 @@ class Foo {
     })
 
     then:
-    snapshotter.assertThat(result.source).matchesSnapshot()
+    snapshotter.assertThat(result.source).matchesSnapshot(snapshotId)
   }
 
   def "full feature exercise"() {

spock-specs/src/test/resources/org/spockframework/smoke/ast/AstSpec/enums-groovy4.groovy

@@ -0,0 +1,47 @@
+public final class Alpha extends java.lang.Enum<Alpha> {
+
+    public static final Alpha A
+    public static final Alpha B
+    public static final Alpha C
+    public static final Alpha MIN_VALUE
+    public static final Alpha MAX_VALUE
+    private static final Alpha[] $VALUES
+
+    public static final Alpha[] values() {
+        return $VALUES.clone()
+    }
+
+    public Alpha next() {
+        java.lang.Integer ordinal = this.ordinal() + 1
+        if ( ordinal >= $VALUES.length) {
+            return MIN_VALUE
+        }
+        return $VALUES [ ordinal ]
+    }
+
+    public Alpha previous() {
+        java.lang.Integer ordinal = this.ordinal() - 1
+        if ( ordinal < 0) {
+            return MAX_VALUE
+        }
+        return $VALUES [ ordinal ]
+    }
+
+    public static Alpha valueOf(java.lang.String name) {
+        return java.lang.Enum.valueOf(Alpha, name)
+    }
+
+    public static final Alpha $INIT(java.lang.Object[] para) {
+        return this (* para )
+    }
+
+    static {
+        A = Alpha.$INIT('A', 0)
+        B = Alpha.$INIT('B', 1)
+        C = Alpha.$INIT('C', 2)
+        MIN_VALUE = A
+        MAX_VALUE = C
+        $VALUES = new Alpha[]{A, B, C}
+    }
+
+}