maven: install find and add openjdk-16

fixes https://github.com/carlossg/docker-maven/issues/165

library/maven

@@ -18,7 +18,7 @@ Directory: openjdk-11-slim
 
 Tags: 3.6.3-jdk-14, 3.6-jdk-14, 3-jdk-14
 Architectures: amd64
-GitCommit: 26ba49149787c85b9c51222b47c00879b2a0afde
+GitCommit: ccd70a6c5daf631f2cc37b938c624f50a11dc309
 Directory: openjdk-14
 
 Tags: 3.6.3-jdk-8, 3.6-jdk-8, 3-jdk-8
@@ -48,7 +48,7 @@ Directory: openjdk-11-slim
 
 Tags: 3.6.3-openjdk-14, 3.6.3, 3.6.3-openjdk, 3.6-openjdk-14, 3.6, 3.6-openjdk, 3-openjdk-14, 3, latest, 3-openjdk, openjdk
 Architectures: amd64
-GitCommit: 26ba49149787c85b9c51222b47c00879b2a0afde
+GitCommit: ccd70a6c5daf631f2cc37b938c624f50a11dc309
 Directory: openjdk-14
 
 Tags: 3.6.3-openjdk-14-slim, 3.6.3-slim, 3.6-openjdk-14-slim, 3.6-slim, 3-openjdk-14-slim, slim
@@ -57,10 +57,15 @@ GitCommit: 440e1f708e8fa5ea4d6ef509d22aee6d8265b209
 Directory: openjdk-14-slim
 
 Tags: 3.6.3-openjdk-15, 3.6-openjdk-15, 3-openjdk-15
-Architectures: amd64
-GitCommit: 4ba4f1c3b6600e64c8c430dfea2ef65ff18608ff
+Architectures: amd64, arm64v8
+GitCommit: ccd70a6c5daf631f2cc37b938c624f50a11dc309
 Directory: openjdk-15
 
+Tags: 3.6.3-openjdk-16, 3.6-openjdk-16, 3-openjdk-16
+Architectures: amd64, arm64v8
+GitCommit: 65c18298b104b80fb15deb3d5d69c5ca215db9a2
+Directory: openjdk-16
+
 Tags: 3.6.3-openjdk-8, 3.6-openjdk-8, 3-openjdk-8
 Architectures: amd64
 GitCommit: 26ba49149787c85b9c51222b47c00879b2a0afde