Debug logs should use RFC3339 timestamps (again?)

[negz]

What happened?

It seems like (at least in debug mode) our logger is now using epoch time. I'm 99% sure it used to use RFC3339 when in debug mode, which would make sense since epochs are fairly meaningless to human readers.

crossplane-contrib/provider-aws#1626
kubernetes-sigs/controller-runtime#2029

How can we reproduce it?

What environment did it happen in?

Crossplane version:

We should pass the required args to get RFC3339 timestamps - see linked PRs above.

[negz]

Actually, the linked controller-runtime PR is included in https://github.com/kubernetes-sigs/controller-runtime/releases/tag/v0.14.0 so this will be fixed by #375.