Update Gradle to 6.3 and build against JDK 14

With this pull request we are updating to the latest Gradle version,
so we can run our builds against Java 14.

PR: #195
Closes: #196, #197

.github/workflows/actions.yml

@@ -15,7 +15,7 @@ jobs:
     strategy:
       matrix:
         # test against latest update of each major Java version, as well as specific updates of LTS versions:
-        java: [ 8, 11 ]
+        java: [ 8, 11, 14 ]
         os: [ubuntu-latest, windows-latest, macos-latest]
     name: ${{ matrix.os }} - Java ${{ matrix.java }}
     steps:

.infra/gradle/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-5.6.2-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.3-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

build.gradle.kts

@@ -6,7 +6,6 @@ plugins {
     id("com.diffplug.gradle.spotless") version "3.27.1"
     id("org.shipkit.java") version "2.2.5"
     id("at.zierler.yamlvalidator") version "1.5.0"
-    id("com.gradle.build-scan") version "2.4.2"
     id("org.sonarqube") version "2.8"
 }
 
@@ -47,11 +46,6 @@ dependencies {
     testRuntimeOnly(group = "org.apache.logging.log4j", name = "log4j-jul", version = "2.12.1")
 }
 
-buildScan {
-    termsOfServiceUrl = "https://gradle.com/terms-of-service"
-    termsOfServiceAgree = "yes"
-}
-
 spotless {
     val headerFile = file(".infra/spotless/eclipse-public-license-2.0.java")
 

settings.gradle.kts

@@ -1 +1,12 @@
 rootProject.name = "junit-pioneer"
+
+plugins {
+  id("com.gradle.enterprise") version "3.2"
+}
+
+gradleEnterprise { 
+    buildScan {
+        termsOfServiceUrl = "https://gradle.com/terms-of-service"
+        termsOfServiceAgree = "yes"
+    }
+}