chore(release): 2.4.0 [skip ci]

# [2.4.0](https://gitlab.com/to-be-continuous/terraform/compare/2.3.2...2.4.0) (2022-01-10)

### Features

* Vault variant + non-blocking warning in case failed decoding [@url](https://gitlab.com/url)@ variable ([4f1265a3](https://gitlab.com/to-be-continuous/terraform/commit/4f1265a39edd87fcac848778d2f687661e527421))