feat(SNS): add topic_arn to created secrets

[darkanakin41]

Description of your changes

Fixes #1577: inject topic ARN in the secrets

I have:

• Read and followed Crossplane's contribution process.
• Run make reviewable to ensure this PR is ready for review.
• Added backport release-1.17 labels to auto-backport this PR if necessary.

How has this code been tested

It was build and deploy to a test cluster. The resource was properly created and and the secret was set properly aswell:

[darkanakin41]

@jbw976 I've managed to build and test it and it worked:

Docker image: https://hub.docker.com/r/darkanakin41/provider-aws-sns/tags
I would love to have it backported to 1.17 but I cannot add the flag

[turkenf]

Hi @darkanakin41,

Thank you for your first contribution 🙂 I left a comment for you to consider. Also, I see in your explanations that you have successfully tested it. It would be great if you could share a screenshot that the arn came to the secret properly.

[darkanakin41]

Hi @darkanakin41,

Thank you for your first contribution 🙂 I left a comment for you to consider. Also, I see in your explanations that you have successfully tested it. It would be great if you could share a screenshot that the arn came to the secret properly.

Hey @turkenf
The screenshot is in both the comment and the initial message (i've updated it this morning) but here it is again:

I've not displayed the value because it contains some work informations. But it you need to see the real value, not the encoded one, let me know :)

BTW, i've applied your suggestion

[turkenf]

/test-examples="examples/sns/v1beta1/topic.yaml"

[turkenf]

/test-examples="examples/sns/v1beta1/topic.yaml"

[turkenf]

Thank you @darkanakin41, LGTM.