Update dependency FluentValidation to v12

Author: renovate[bot]

src/Extensions/Extensions.csproj

@@ -7,7 +7,7 @@
 
   <ItemGroup>
     <PackageReference Include="EPPlus" Version="[4.5.3.3]" />
-    <PackageReference Include="FluentValidation" Version="11.11.0" />
+    <PackageReference Include="FluentValidation" Version="12.1.0" />
     <PackageReference Include="Microsoft.AspNetCore.Hosting" Version="2.3.0" />
     <PackageReference Include="Microsoft.AspNetCore.Mvc.Core" Version="2.3.0" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.Relational" Version="9.0.1" />