build: bump FluentValidation in /App/backend-api/Microsoft.GS.DPS

Bumps [FluentValidation](https://github.com/JeremySkinner/fluentvalidation) from 11.9.2 to 11.11.0.
- [Release notes](https://github.com/JeremySkinner/fluentvalidation/releases)
- [Changelog](https://github.com/FluentValidation/FluentValidation/blob/main/Changelog.txt)
- [Commits](FluentValidation/FluentValidation@11.9.2...11.11.0)

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

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

Author: dependabot[bot]

App/backend-api/Microsoft.GS.DPS/Microsoft.GS.DPS.csproj

@@ -9,7 +9,7 @@
   <ItemGroup>
     <PackageReference Include="AutoMapper" Version="13.0.1" />
     <PackageReference Include="Azure.Search.Documents" Version="11.6.0" />
-    <PackageReference Include="FluentValidation" Version="11.9.2" />
+    <PackageReference Include="FluentValidation" Version="11.11.0" />
     <PackageReference Include="FluentValidation.DependencyInjectionExtensions" Version="11.9.2" />
     <PackageReference Include="Microsoft.KernelMemory.WebClient" Version="0.95.241216.2" />
     <PackageReference Include="Microsoft.Maui.Graphics" Version="8.0.90" />