feat: allow overwrites of array fields

[akesser]

Description of your changes

This change allows to overwrite fields in arrays. e.g. a overwriteFields entry like

  - path: spec.forProvider.certificateAuthorityConfiguration[0].subject[0].state
    value: "Berlin"
    ignore: true

will lead to the following yaml

spec:
  forProvider:
    certificateAuthorityConfiguration:
      - subject:
         -  state: Berlin

Fixes #

I have:

• Read and followed Crossplane's contribution process.
• Run make reviewable test to ensure this PR is ready for review.

How has this code been tested

Tested locally and added tests