Update module github.com/gruntwork-io/terratest to v0.40.1

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
github.com/gruntwork-io/terratest	require	patch	v0.40.0 -> v0.40.1

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Release Notes

gruntwork-io/terratest

### [`v0.40.1`](https://togithub.com/gruntwork-io/terratest/releases/v0.40.1) [Compare Source](https://togithub.com/gruntwork-io/terratest/compare/v0.40.0...v0.40.1) #### Modules affected - `environment` #### Description - Added function to require an env var is defined in test (`environment.RequireEnvVar`) #### Related links - [https://github.com/gruntwork-io/terratest/pull/1061](https://togithub.com/gruntwork-io/terratest/pull/1061)

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