Bump vlucas/phpdotenv from 5.6.0 to 5.6.1 in the dev-dependencies group

Bumps the dev-dependencies group with 1 update: [vlucas/phpdotenv](https://github.com/vlucas/phpdotenv).


Updates `vlucas/phpdotenv` from 5.6.0 to 5.6.1
- [Release notes](https://github.com/vlucas/phpdotenv/releases)
- [Commits](vlucas/phpdotenv@v5.6.0...v5.6.1)

---
updated-dependencies:
- dependency-name: vlucas/phpdotenv
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: dev-dependencies
...

Signed-off-by: dependabot[bot] <[email protected]>