Update dotnet monorepo to v10 (major)

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
Microsoft.AspNetCore.TestHost (source)	9.0.10 -> 10.0.0
Microsoft.Extensions.Options (source)	9.0.10 -> 10.0.0

---

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 these updates again.

---

• If you want to rebase/retry this PR, check this box

---

This PR was generated by Mend Renovate. View the repository job log.

[renovate]

Edited/Blocked Notification

Renovate will not automatically rebase this PR, because it does not recognize the last commit author and assumes somebody else may have edited the PR.

You can manually request rebase by checking the rebase/retry box above.

⚠️ Warning: custom changes will be lost.

[github-actions]

Package	Line Rate	Branch Rate	Complexity	Health
Ktos.AspNetCore.Authentication.ApiKeyHeader	100%	100%	29	✔
Summary	100% (46 / 46)	100% (22 / 22)	29	✔