VOL-3978 - update to go 1.16

- upgraded to latest build tools that support 1.16
- specified Java source and target versions
- converted test/pom.xml to unix file format from dos

Change-Id: If2dece3a22bd247e8df8cccaac9860be8dbbe4cf
diff --git a/VERSION b/VERSION
index 4aa925d..ee74734 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-4.1.0-dev
+4.1.0