feat(acm): add reference and selector for certificate_authority_arn

[haarchri]

Description of your changes

add reference and selector for certificate_authority_arn to acmpca certificate authority we want to migrate from community provider to provider-upjet-aws but reference and selector is missing like:

https://marketplace.upbound.io/providers/crossplane-contrib/provider-aws/v0.48.1/resources/acm.aws.crossplane.io/Certificate/v1beta1#doc:spec-forProvider-certificateAuthorityARNRef

https://marketplace.upbound.io/providers/crossplane-contrib/provider-aws/v0.48.1/resources/acm.aws.crossplane.io/Certificate/v1beta1#doc:spec-forProvider-certificateAuthorityARNSelector

Fixes #

I have:

• [x] Read and followed Crossplane's contribution process.
• [x] Run make reviewable to ensure this PR is ready for review.
• [x] Added backport release-x.y labels to auto-backport this PR if necessary.

How has this code been tested