Bump dotenv-rails from 2.7.1 to 2.7.2 (#10381)

Bumps [dotenv-rails](https://github.com/bkeepers/dotenv) from 2.7.1 to 2.7.2.
- [Release notes](https://github.com/bkeepers/dotenv/releases)
- [Changelog](https://github.com/bkeepers/dotenv/blob/master/Changelog.md)
- [Commits](https://github.com/bkeepers/dotenv/compare/v2.7.1...v2.7.2

)

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