Prepare for a release by update graknlabs_common and graknlabs_protocol to release versions (#60)

## What is the goal of this PR?

- We've updated `common` and `protocol` which are depended by `client-java`.
- Add `common` to the `release-validate` CI job.

Author: Ganeshwara Herawan Hananda

dependencies/graknlabs/dependencies.bzl

@@ -23,7 +23,7 @@ def graknlabs_common():
     git_repository(
         name = "graknlabs_common",
         remote = "https://github.com/graknlabs/common",
-        commit = "95f2cda34a4aa7467f63b4e7724236e9e1e1c151"
+        tag = "0.2.1"
     )
 
 def graknlabs_build_tools():
@@ -44,7 +44,7 @@ def graknlabs_protocol():
     git_repository(
         name = "graknlabs_protocol",
         remote = "https://github.com/graknlabs/protocol",
-        commit = "1.0.3", # sync-marker: do not remove this comment, this is used for sync-dependencies by @graknlabs_protocol
+        tag = "1.0.3", # sync-marker: do not remove this comment, this is used for sync-dependencies by @graknlabs_protocol
     )
 
 def graknlabs_behaviour():