chore(deps): bump MediatR from 12.2.0 to 12.3.0

Bumps [MediatR](https://github.com/jbogard/MediatR) from 12.2.0 to 12.3.0.
- [Release notes](https://github.com/jbogard/MediatR/releases)
- [Commits](LuckyPennySoftware/MediatR@v12.2.0...v12.3.0)

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

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

src/Cnblogs.Architecture.Ddd.Domain.Abstractions/Cnblogs.Architecture.Ddd.Domain.Abstractions.csproj

@@ -14,7 +14,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="MediatR" Version="12.2.0" />
+    <PackageReference Include="MediatR" Version="12.3.0" />
   </ItemGroup>
 
 </Project>