fix(misconf): deduplicate terraform results

[knqyf263]

Description

#4457 caused duplicate misconfiguration results to be returned since all the nested terraform files are detected now.

This PR deduplicates terraform results.

Related PRs

• fix(terraform): recursively detect all Root Modules #4457

Checklist

• I've read the guidelines for contributing to this repository.
• I've followed the conventions in the PR title.
• I've added tests that prove my fix is effective or that my feature works.
• I've updated the documentation with the relevant information (if needed).
• I've added usage information (if the PR introduces new options)
• I've included a "before" and "after" example to the description (if the PR is a user interface change).

[afdesk]

LGTM