fix(deps): ⬆️ bump vlucas/phpdotenv to v5.6.0

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
vlucas/phpdotenv	5.5.0 -> 5.6.0

---

Release Notes

vlucas/phpdotenv (vlucas/phpdotenv)

### [`v5.6.0`](https://togithub.com/vlucas/phpdotenv/releases/tag/v5.6.0): (12/11/2023) [Compare Source](https://togithub.com/vlucas/phpdotenv/compare/v5.5.0...v5.6.0) We announce the immediate availability V5.6.0. ##### Changes - Removed support for PHP 7.1 ([`f1f4ca5`](https://togithub.com/vlucas/phpdotenv/commit/f1f4ca570735af96e7fb1c173f0fe71d9229b75c)) - Add official support for PHP 8.3 ([`f1f4ca5`](https://togithub.com/vlucas/phpdotenv/commit/f1f4ca570735af96e7fb1c173f0fe71d9229b75c))

---

Configuration

📅 Schedule: Branch creation - "before 4am on Monday" in timezone America/Chicago, Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• [ ] If you want to rebase/retry this PR, check this box

---

This PR has been generated by Mend Renovate. View repository job log here.