Bump go version from 1.13 to 1.16 in lint pre-playbook

Change-Id: I5236854f97ca32b7d3fdc62f516c427053dbd1f7
diff --git a/playbooks/lint/pre.yaml b/playbooks/lint/pre.yaml
index 0a452dd..13ccb60 100644
--- a/playbooks/lint/pre.yaml
+++ b/playbooks/lint/pre.yaml
@@ -1,4 +1,4 @@
 - hosts: all
   roles:
     - role: ensure-go
-      go_version: 1.13
+      go_version: 1.16