Update dependency symfony/flex to v2.7.1

This MR contains the following updates:

Package	Type	Update	Change
symfony/flex	require	minor	2.6.0 -> 2.7.1

---

Release Notes

symfony/flex (symfony/flex)

v2.7.1

Compare Source

What's Changed

• CS modernize_strpos by @​rosier in https://github.com/symfony/flex/pull/1053
• Don't remove still-referenced files when unconfiguring recipes by @​nicolas-grekas in https://github.com/symfony/flex/pull/1054

Full Changelog: https://github.com/symfony/flex/compare/v2.7.0...v2.7.1

v2.7.0

Compare Source

What's Changed

• Fix unpack logic by @​nicolas-grekas in https://github.com/symfony/flex/pull/1050
• Allow to define entrypoint in importmap.php by @​Jibbarth in https://github.com/symfony/flex/pull/1026

New Contributors

• @​Jibbarth made their first contribution in https://github.com/symfony/flex/pull/1026

Full Changelog: https://github.com/symfony/flex/compare/v2.6.0...v2.7.0

---

Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

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

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

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

---

• If you want to rebase/retry this MR, check this box

---

This MR has been generated by Renovate Bot.