Update dotenv requirement from 4.0.0 to 6.2.0
Update dotenv requirement from 4.0.0 to 6.2.0

Updates the requirements on [dotenv](https://github.com/motdotla/dotenv) to permit the latest version.
- [Release notes](https://github.com/motdotla/dotenv/releases)
- [Changelog](https://github.com/motdotla/dotenv/blob/master/CHANGELOG.md)
- [Commits](https://github.com/motdotla/dotenv/commits/v6.2.0)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
thiagozanetti/inv-gh-hero,thiagozanetti/inv-gh-hero