[VOL-3142] Update dependency of voltha-lib-go to include log package registration fix

Change-Id: I36890c7aa685e46721b481d5c965f9c0bc86934c
diff --git a/VERSION b/VERSION
index c813fe1..3c43790 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.2.5
+1.2.6