fix: Fix installing poetry dependencies using locally installed poetry

[FurqanHabibi]

Description

This fixes installing poetry dependencies using locally installed poetry.

Fixes #386

Motivation and Context

• See #386
• Local poetry might be preferable for eg. faster build time, etc.

Breaking Changes

None

How Has This Been Tested?

• [x] I have updated at least one of the examples/* to demonstrate and validate my change(s)
• [x] 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

  cd examples/build-package
  terraform init
  rm -rf builds/package_dir_poetry/ && terraform apply -target module.package_dir_poetry_local -auto-approve
  terraform destroy -target module.package_dir_poetry_local

[github-actions[bot]]

This PR has been automatically marked as stale because it has been open 30 days with no activity. Remove stale label or comment or this PR will be closed in 10 days

[github-actions[bot]]

I'm going to lock this pull request because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues. If you have found a problem that seems related to this change, please open a new issue and complete the issue template so we can capture all the details necessary to investigate further.