[backend-docker]: Bump dotnet/sdk from 9.0 to 10.0 in /smo-backend

Bumps dotnet/sdk from 9.0 to 10.0.

---
updated-dependencies:
- dependency-name: dotnet/sdk
  dependency-version: '10.0'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

smo-backend/dockerfile

@@ -11,7 +11,7 @@ USER $APP_UID
 WORKDIR /app
 EXPOSE 3000
 
-FROM mcr.microsoft.com/dotnet/sdk:9.0 AS build
+FROM mcr.microsoft.com/dotnet/sdk:10.0 AS build
 ARG BUILD_CONFIGURATION=Release
 WORKDIR /src
 COPY ["./smo-backend.csproj", "./"]