chore(deps): update dependency marshmallow to v3.26.1

This MR contains the following updates:

Package	Update	Change
marshmallow (changelog)	minor	==3.21.1 -> ==3.26.1

---

Release Notes

marshmallow-code/marshmallow (marshmallow)

v3.26.1

Compare Source

v3.26.0

Compare Source

v3.25.1

Compare Source

v3.25.0

Compare Source

v3.24.2

Compare Source

v3.24.1

Compare Source

v3.24.0

Compare Source

v3.23.3

Compare Source

v3.23.2

Compare Source

v3.23.1

Compare Source

v3.23.0

Compare Source

v3.22.0

Compare Source

v3.21.3

Compare Source

v3.21.2

Compare Source

---

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.