Cut a new tag as 0.5.10 tag seem to have been altered after creation

Looks like `0.5.10` tag was created multiple times which resulted in
hash mismatch across go package proxy and github.

To avoid this, withdraw `0.5.10` and cut a new tag.

Relates to:
 - #1367
 - #1368

version.json

@@ -1,3 +1,3 @@
 {
-  "version": "v0.5.10"
+  "version": "v0.5.11"
 }