Update vlucas/phpdotenv requirement from ^2.0 to ^5.0
Update vlucas/phpdotenv requirement from ^2.0 to ^5.0

Updates the requirements on [vlucas/phpdotenv](https://github.com/vlucas/phpdotenv) to permit the latest version.
- [Release notes](https://github.com/vlucas/phpdotenv/releases)
- [Commits](https://github.com/vlucas/phpdotenv/compare/v2.0.0...v5.1.0)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>

qandidate-labs/qandidate-toggle-api,qandidate-labs/qandidate-toggle-api