Update Radix to latest and lock pessimistically (#262)
Update Radix to latest and lock pessimistically (#262)

Radix project follows a Semantic Versioning approach which avoids
introducing breaking changes in PATCH releases.

With this in consideration, it is safe to use pessimistic operator
to indicate the version of Radix to use.

Closes #261
kemalcr/kemal,sdogruyol/kemal,sdogruyol/kemal