Merge pull request #300 from apache/jdk16-builds-jenkins

(build) update latest GA'd JDKs to 16.
diff --git a/.jenkins.groovy b/.jenkins.groovy
index 1ccd3a0..2a44e33 100644
--- a/.jenkins.groovy
+++ b/.jenkins.groovy
@@ -38,7 +38,7 @@
                         name 'MATRIX_JDK'
                         values 'jdk_1.8_latest', 'adopt_hs_8_latest', 'adopt_j9_8_latest',
                                 'jdk_11_latest', 'adopt_hs_11_latest', 'adopt_j9_11_latest',
-                                'jdk_15_latest', 'adopt_hs_15_latest', 'adopt_j9_15_latest'
+                                'jdk_16_latest', 'adopt_hs_16_latest', 'adopt_j9_16_latest'
                     }
                     // Additional axess, like OS and maven version can be configured here.
                 }