feat: add hydra client jwks uri

[Jorgagu]

Update Hydra Maestro oauth2clients CR spec to add the jwks uri field for the client.
Waiting ory/hydra-maester#126 to be merged.

Related Issue or Design Document

Checklist

• I have read the contributing guidelines and signed the CLA.
• I have referenced an issue containing the design document if my change introduces a new feature.
• I have read the security policy.
• I confirm that this pull request does not address a security vulnerability.
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• I have added tests that prove my fix is effective or that my feature works.
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Further comments

[Demonsthere]

We need to wait with this until I make a full release of the controller. There is some weird bug with circleci where it sometimes cannot download kustomize during tests 😠.