chore(deps): update mcr.microsoft.com/dotnet/sdk docker tag to v8.0.203

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
mcr.microsoft.com/dotnet/sdk	stage	patch	8.0.202-alpine3.18 -> 8.0.203-alpine3.18

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Release Notes

dotnet/sdk (mcr.microsoft.com/dotnet/sdk)

### [`v8.0.203`](https://togithub.com/dotnet/sdk/compare/v8.0.202...v8.0.203) [Compare Source](https://togithub.com/dotnet/sdk/compare/v8.0.202...v8.0.203)

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Configuration

📅 Schedule: Branch creation - "before 07:00 on Thursday" in timezone Europe/Oslo, 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.

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

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