Bump FluentValidation from 11.8.1 to 12.0.0

---
updated-dependencies:
- dependency-name: FluentValidation
  dependency-version: 12.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

Directory.Build.props

@@ -8,7 +8,7 @@
 
   <ItemGroup>
     <PackageReference Include="AutoMapper" Version="12.0.1" />
-    <PackageReference Include="FluentValidation" Version="11.8.1" />
+    <PackageReference Include="FluentValidation" Version="12.0.0" />
     <PackageReference Include="FluentValidation.DependencyInjectionExtensions" Version="11.8.1" />
     <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="8.0.17" />
     <PackageReference Include="Microsoft.EntityFrameworkCore" Version="8.0.17" />