Update mcr.microsoft.com/dotnet/sdk Docker tag to v8.0.402

This PR contains the following updates:

Package	Type	Update	Change
mcr.microsoft.com/dotnet/sdk	stage	patch	`8.0.401-alpine3.20` -> `8.0.402-alpine3.20`

Release Notes

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

### [`v8.0.402`](https://redirect.github.com/dotnet/sdk/compare/v8.0.401...v8.0.402) [Compare Source](https://redirect.github.com/dotnet/sdk/compare/v8.0.401...v8.0.402)

Configuration

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Altinn / altinn-notifications

Update mcr.microsoft.com/dotnet/sdk Docker tag to v8.0.402 #618

Release Notes

Configuration

Quality Gate passed