Update unit tests for bicep and close PR job

[jtracey93]

Overview/Summary

This PR updates the unit tests for bicep files and the close PR job.

This PR fixes/adds/changes/removes

1. Updated .github\workflows\cleanup-on-close-pr.yml to use standard shell instead of container based action outputs for more visibility into logs
2. Updated .github\workflows\bicep-build-to-validate.yml by removing deployment/E2E tests of modules as these will move to ADO shortly.
   • These tests only now build the bicep files, and fail if any modules fail to build, and check against the bicep linter using the bicepconfig.json files in each module

Breaking Changes

None

Testing Evidence

Tests have just removed or converted existing functionality and commands they were using. Linters will confirm they are valid YAML files

Bicep Unit Tests - Tested Here: https://github.com/Azure/ALZ-Bicep/runs/5198665645?check_suite_focus=true

As part of this Pull Request I have

• Checked for duplicate Pull Requests
• Associated it with relevant ADO items
• Ensured my code/branch is up-to-date with the latest changes in the main branch
• Performed testing and provided evidence.
• Updated relevant and associated documentation.