Reduce ECR delete scope

[davidkelliott]

A reference to the issue / Description of it

Wrong permissions for deleting ECR images

How does this PR fix the problem?

This should be to allow users to delete images, rather than repositories.

How has this been tested?

Please describe the tests that you ran and provide instructions to reproduce.

TF Plan

Deployment Plan / Instructions

Will this deployment impact the platform and / or services on it?

No (unless people are manually deleting ECR repos which they shouldn't be)

Checklist (check x in [ ] of list items)

• I have performed a self-review of my own code
• All checks have passed
• I have made corresponding changes to the documentation
• Plan and discussed how it should be deployed to PROD (If needed)

Additional comments (if any)

{Please write here}

[github-actions]

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CTFLint Scan Success

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Setting default tflint config...
Running tflint --init...
Installing `terraform` plugin...
Installed `terraform` (source: github.com/terraform-linters/tflint-ruleset-terraform, version: 0.2.1)
tflint will check the following folders: