Update dependency werkzeug to v3.1.5

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
werkzeug (changelog)	==3.1.4 → ==3.1.5

---

Release Notes

pallets/werkzeug (werkzeug)

v3.1.5

Compare Source

Released 2026-01-08

• safe_join on Windows does not allow more special device names, regardless
  of extension or surrounding spaces. :ghsa:87hc-h4r5-73f7
• The multipart form parser handles a \r\n sequence at a chunk boundary.
  This fixes the previous attempt, which caused incorrect content lengths.
  :issue:3065 :issue:3077
• Fix AttributeError when initializing DebuggedApplication with
  pin_security=False. :issue:3075

---

Configuration

📅 Schedule: Branch creation - Between 12:00 AM and 03:59 AM, only on Monday ( * 0-3 * * 1 ) (UTC), Automerge - At any time (no schedule defined).

🚦 Automerge: Enabled.

♻ Rebasing: Whenever PR is behind base branch, 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 was generated by Mend Renovate. View the repository job log.