Upgrade to Gradle 7.4.2

The latest Gradle version available is 7.4.2. At the same time, the
reports.*.enabled property in the coverage task has been deprecated
while the latest compatible shadow version is 7.1.2.

Let's upgrade to Gradle 7.4.2, replace the reports.*.enabled property
with the reports.*.required property and update the shadow version.

build.gradle

@@ -1,7 +1,7 @@
 plugins {
     id 'java'
     id 'checkstyle'
-    id 'com.github.johnrengelman.shadow' version '6.1.0'
+    id 'com.github.johnrengelman.shadow' version '7.1.2'
     id 'application'
     id 'jacoco'
 }
@@ -35,8 +35,8 @@ task coverage(type: JacocoReport) {
         })
     }
     reports {
-        html.enabled = true
-        xml.enabled = true
+        html.required = true
+        xml.required = true
     }
 }
 

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.9.2-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.4.2-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists