feat: update minio image tag; nats imagePullSecrets

[ypoplavs]

Checklist:

• Any new values are backwards compatible and/or have sensible default.
• I have signed off all my commits as required by DCO.
• My CI is green.

[ed382]

What is the case of the slice so supposed to handle? You are ranging here so the . is referring to the entity in the list, something like this?

imagePullSecrets:
  - ['secret1', 'secret2']

[ypoplavs]

slice not needed, remnants of some testing which were overlooked, I have removed it

[ypoplavs]

Now it's supposed to handle cases like:

imagePullSecrets:
   - name: secret1
   - name: secret2
 
imagePullSecrets:
   - secret1
   - secret2

imagePullSecrets: ['secret1', 'secret2']

But testkube-enterprise chart for now accepts only first option. I guess for the majority of our services we need to make modifications to accept different types. I'll add this to the docs.