chore: Upgrade k8s and Knative dependencies

[astefanutti]

This PR upgrades the k8s dependencies to v0.23.x, so it's possible to integrate Camel K with more recent k8s projects.

It incidentally upgrades the following dependencies:

• controller-runtime to v0.11.2
• knative to v1.6.0 (v0.33.0)
• code-generator to v0.23.5

Fixes #3381.

Release Note

Upgrade k8s to v0.23.5
Upgrade controller-runtime to v0.11.2
Upgrade Knative to v1.6.0

[tadayosi]

LGTM. I'm just wondering why it's the time to upgrade the core dependencies. Is my understanding correct that Camel K 1.10.0 will be released in September whereas K8s 1.22 will be EoL on 2022-10-28, so it's OK to support only K8s >=1.23 for Camel K 1.10.0?

[astefanutti]

LGTM. I'm just wondering why it's the time to upgrade the core dependencies. Is my understanding correct that Camel K 1.10.0 will be released in September whereas K8s 1.22 will be EoL on 2022-10-28, so it's OK to support only K8s >=1.23 for Camel K 1.10.0?

Generally, the sooner the upgrade the better, that happens once all the main dependencies have upgraded. For that round, the rationale is that the upgrade is required for the project to compile against k8s v1.23+, and Knative project hasn't yet upgraded to k8s v1.24.