fix: Use `lookup()` on computed resource attribute lookups in `for_each` loop

[bryantbiggs]

Description

• Use lookup() on computed resource attribute lookups in for_each loop
• Correct discrepancy in conditional creation logic of security group

Motivation and Context

• Running into this error https://github.com/clowdhaus/terraform-for-each-unknown

Breaking Changes

How Has This Been Tested?

• [ ] I have updated at least one of the examples/* to demonstrate and validate my change(s)
• [ ] I have tested and validated these changes using one or more of the provided examples/* projects
• [x] I have executed pre-commit run -a on my pull request

[antonbabenko]

This PR is included in version 1.3.1 :tada:

[github-actions[bot]]

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