fix(deps): update rust crate openstack_sdk to v0.21.2

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
openstack_sdk	dependencies	patch	0.21.0 -> 0.21.2

---

Release Notes

gtema/openstack (openstack_sdk)

v0.21.2

Compare Source

Added

• Make openapi specs reproducible (#​1244)

Fixed

• Fix dns qp marker parameter name (#​1268)

Other

• Add global clippy config (#​1252)

v0.21.1

Compare Source

Added

• Hopefully address nested structures renaming race (#​1237)
• Add cascade QP for delete octavia loadbalancer (#​1204)

Fixed

• Address explicit nullable types in network (#​1226)

Other

• Vendor token auth endpoint (#​1236)
• Fix typos in parameter names (#​1203)
• Initialize mock testing (#​1202)

---

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 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.