chore: Bump MediatR from 12.4.1 to 13.1.0

---
updated-dependencies:
- dependency-name: MediatR
  dependency-version: 13.1.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

src/BuildingBlocks/BuildingBlocks/BuildingBlocks.csproj

@@ -10,7 +10,7 @@
       <PackageReference Include="FluentValidation" Version="12.0.0-preview1" />
       <PackageReference Include="FluentValidation.AspNetCore" Version="11.3.1" />
       <PackageReference Include="Mapster" Version="7.4.2-pre01" />
-      <PackageReference Include="MediatR" Version="12.4.1" />
+      <PackageReference Include="MediatR" Version="13.1.0" />
       <PackageReference Include="Microsoft.FeatureManagement.AspNetCore" Version="4.3.0" />
       <PackageReference Include="Stripe.net" Version="48.5.0" />
     </ItemGroup>