build: update golang.org/x/net commit hash to d4b1ae0

This MR contains the following updates:

Package	Type	Update	Change
golang.org/x/net	require	digest	e81a3d9 -> d4b1ae0

---

Configuration

📅 Schedule: "after 10pm every weekday,before 5am every weekday,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, check this box.

---

This MR has been generated by Renovate Bot.