Update dependency xmltodict to v0.15.1

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
xmltodict	==0.14.2 -> ==0.15.1

---

Release Notes

martinblech/xmltodict (xmltodict)

v0.15.1

Compare Source

• Security: Further harden XML injection prevention during unparse (follow-up to
  v0.15.0). In addition to '<'/'>' rejection, now also reject element and
  attribute names (including @xmlns prefixes) that:
  • start with '?' or '!'
  • contain '/' or any whitespace
  • contain quotes (' or ") or '='
  • are non-strings (names must be str; no coercion)

v0.15.0

Compare Source

• Security: Prevent XML injection (CVE-2025-9375) by rejecting '<'/'>' in
  element and attribute names (including @xmlns prefixes) during unparse.
  This limits validation to avoiding tag-context escapes; attribute values
  continue to be escaped by the SAX XMLGenerator.
  Advisory: https://fluidattacks.com/advisories/mono

---

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: 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 was generated by Mend Renovate. View the repository job log.