CodeRabbit Generated Unit Tests: Add tests for workflows, config files, Terraform, and docs

[coderabbitai]

Unit test generation was requested by @tmikula-dev.

• Trivy and TFLint CI check implementation #68 (comment)

The following files were modified:

• tests/test_config_files.py
• tests/test_documentation.py
• tests/test_github_workflows.py
• tests/test_terraform_config.py

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