Fix version in METADATA

Exempt-From-Owner-Approval: no code change
Change-Id: If850a40ee937cec1aff75c4d62754f9fb39805d0
diff --git a/METADATA b/METADATA
index 20a7c39..5d8beb8 100644
--- a/METADATA
+++ b/METADATA
@@ -9,7 +9,7 @@
     type: GIT
     value: "https://github.com/cbeust/jcommander.git"
   }
-  version: "1.66"
+  version: "1.71"
   last_upgrade_date {
     year: 2020
     month: 4