Bump up Gerrit version to 3.2.1

Change-Id: I8ccc06905a24bab471586ffa2fafddaf98d6061c
diff --git a/common.env b/common.env
index 0de0fd5..ce79fc7 100644
--- a/common.env
+++ b/common.env
@@ -5,7 +5,7 @@
 
 # Gerrit version
 GERRIT_VERSION=3.2
-GERRIT_PATCH=0
+GERRIT_PATCH=1
 GERRIT_BRANCH=stable-$(GERRIT_VERSION)
 # Gerrit CI
 GERRIT_CI=https://gerrit-ci.gerritforge.com/view/Plugins-$(GERRIT_BRANCH)/job