Test using JDK 21

Author: rpalcolea

.github/workflows/nebula.yml

@@ -22,7 +22,7 @@ jobs:
     strategy:
       matrix:
         # test against latest update of some major Java version(s), as well as specific LTS version(s)
-        java: [ 8, 17, 20]
+        java: [ 8, 17, 21]
     name: Gradle Build without Publish
     steps:
       - uses: actions/checkout@v1

src/test/groovy/com/netflix/nebula/lint/plugin/Gradle8LintReportTaskSpec.groovy

@@ -5,7 +5,7 @@ import spock.lang.Issue
 
 class Gradle8LintReportTaskSpec extends IntegrationTestKitSpec {
     def setup() {
-        gradleVersion = '8.1.1'
+        gradleVersion = '8.4-rc-2'
         debug = true
     }
 

src/test/groovy/com/netflix/nebula/lint/rule/dependency/BypassedForcesWithResolutionRulesSpec.groovy

@@ -264,7 +264,7 @@ test.nebula:a:1.2.0\n""")
         coreAlignment << [true]
     }
 
-    @IgnoreIf({ jvm.isJava20() })
+    @IgnoreIf({ jvm.isJava21() })
     def 'handles dependencies and forces defined per project | core alignment #coreAlignment'() {
         definePluginOutsideOfPluginBlock = true
         //Necessary as 8.x does not have force support
@@ -868,7 +868,7 @@ test.nebula:a:1.3.0\n""")
     }
 
     @Unroll
-    @IgnoreIf({ jvm.isJava20() })
+    @IgnoreIf({ jvm.isJava21() })
     def 'ignores buildscript dependencies for #type'() {
         //Necessary as 8.x does not have force support
         gradleVersion = '7.6'

src/test/groovy/com/netflix/nebula/lint/rule/dependency/UndeclaredDependencyRuleSpec.groovy

@@ -26,7 +26,7 @@ class UndeclaredDependencyRuleSpec extends IntegrationTestKitSpec {
     private static final def sample = new Coordinate('sample', 'alpha', '1.0')
     private static final def commonsLogging = new Coordinate('commons-logging', 'commons-logging', '1.2')
     private static final def commonsLang = new Coordinate('commons-lang', 'commons-lang', '2.6')
-    private static final def lombok = new Coordinate('org.projectlombok', 'lombok', '1.18.22')
+    private static final def lombok = new Coordinate('org.projectlombok', 'lombok', '1.18.30')
     private static final def junit = new Coordinate('junit', 'junit', '4.12')
 
     def main = '''
@@ -157,7 +157,7 @@ class UndeclaredDependencyRuleSpec extends IntegrationTestKitSpec {
                 }
               }
               dependencies {
-                classpath "io.freefair.gradle:lombok-plugin:6.6.1"
+                classpath "io.freefair.gradle:lombok-plugin:8.3"
               }
             }
 
@@ -665,7 +665,7 @@ class UndeclaredDependencyRuleSpec extends IntegrationTestKitSpec {
                 }
               }
               dependencies {
-                classpath "io.freefair.gradle:lombok-plugin:6.6.1"
+                classpath "io.freefair.gradle:lombok-plugin:8.3"
               }
             }