[Feature] Upgrade Hubble Relay and start versioning it along with Cilium

[illrill]

Is your feature request related to a problem? Please describe.
AKS runs a static outdated version of Hubble Relay (v1.15.0), which is not compatible with Hubble UI versions >v0.12.3.

Describe the solution you'd like
Hubble Relay should be versioned together with Cilium (follow the same versioning approach as the official Cilium chart).

Originally posted by @illrill in #4768

[chasewilson]

@sf-msft could you take a look at this?

[sf-msft]

@illrill - Thanks for sharing this feedback. In addition to Cilium, this is also used for metrics in Retina. I'll forward this feedback so the newer Hubble UI is usable with Azure managed Cilium.