Keto version API does not work in REST API and CLI.

[counter2015]

Describe the bug

Can't get keto version from REST API and CLI.

Reproducing the bug
Following the steps here

$ brew install ory/keto/keto
brew install ory/keto/keto
==> Installing keto from ory/keto
==> Downloading https://github.com/ory/keto/releases/download/v0.6.0-alpha.3/keto_0.6.0-alpha.3-sqlite_macos_64bit.tar.gz
==> Downloading from https://github-releases.githubusercontent.com/125619154/aa7abb00-a906-11eb-81f9-6beafd7ba57c?X-Amz-Algorithm=AWS4
######################################################################## 100.0%
🍺  /usr/local/Cellar/keto/0.6.0-alpha.3: 6 files, 26.8MB, built in 8 seconds

The keto version seems not work

$ keto version
Version:			master
Build Commit:	undefined
Build Timestamp:	undefined

$ which keto
/usr/local/bin/keto

$  ll /usr/local/bin/keto
lrwxr-xr-x  1 counter  admin  37  9  7 15:05 /usr/local/bin/keto@ -> ../Cellar/keto/0.6.0-alpha.3/bin/keto

Then I start keto server in local by this config

version: v0.6.0-alpha.3

log:
  level: trace
  leak_sensitive_values: true


namespaces:
  - id: 0
    name: role
  - id: 1
    name: resume
  - id: 2
    name: user

dsn: postgresql://postgres:[email protected]:5432/postgres

serve:
  read:
    host: 0.0.0.0
    port: 4466
  write:
    host: 0.0.0.0
    port: 4467

$ keto serve -c keto.yml

$ keto migrate up --all-namespaces -y -c keto.yml

And in PostMan

Expected behavior

It should return correct version of keto.

Environment

• Version: 0.6.0-alpha.3
• Environment: Mac, PostMan

See also #692