fix(deps): update dependency symfony/flex to v1.17.6

This MR contains the following updates:

Package	Type	Update	Change
symfony/flex	require	patch	1.17.5 -> 1.17.6

---

Release Notes

symfony/flex

v1.17.6

Compare Source

---

Configuration

📅 Schedule: "every weekend" (UTC).

🚦 Automerge: Enabled.

♻ 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, click this checkbox.

---

This MR has been generated by Renovate Bot.