Correct JDK 11 paths for Mac OS

Bug: 136021553
Change-Id: I60494db6c18ad37257d3f429b4659ef36687cf27
diff --git a/build.gradle b/build.gradle
index 9bd2e90..ad28ff9 100644
--- a/build.gradle
+++ b/build.gradle
@@ -532,7 +532,7 @@
     if (OperatingSystem.current().isLinux()) {
         options.forkOptions.javaHome = file(jdkDir + 'Linux')
     } else if (OperatingSystem.current().isMacOsX()) {
-        options.forkOptions.javaHome = file(jdkDir + 'Mac')
+        options.forkOptions.javaHome = file(jdkDir + 'Mac/Contents/Home')
     } else {
         options.forkOptions.javaHome = file(jdkDir + 'Windows')
     }
@@ -547,7 +547,7 @@
     if (OperatingSystem.current().isLinux()) {
         options.forkOptions.javaHome = file(jdkDir + 'Linux')
     } else if (OperatingSystem.current().isMacOsX()) {
-        options.forkOptions.javaHome = file(jdkDir + 'Mac')
+        options.forkOptions.javaHome = file(jdkDir + 'Mac/Contents/Home')
     } else {
         options.forkOptions.javaHome = file(jdkDir + 'Windows')
     }