Bump Microsoft.FeatureManagement from 3.1.0 to 4.0.0

Bumps [Microsoft.FeatureManagement](https://github.com/microsoft/FeatureManagement-Dotnet) from 3.1.0 to 4.0.0.
- [Release notes](https://github.com/microsoft/FeatureManagement-Dotnet/releases)
- [Commits](microsoft/FeatureManagement-Dotnet@3.1.0...4.0.0)

---
updated-dependencies:
- dependency-name: Microsoft.FeatureManagement
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

DigitalLearningSolutions.Data/DigitalLearningSolutions.Data.csproj

@@ -17,7 +17,7 @@
     <PackageReference Include="Freshdesk.Api" Version="0.17.2" />
     <PackageReference Include="FuzzySharp" Version="2.0.2" />
     <PackageReference Include="MailKit" Version="4.3.0" />
-    <PackageReference Include="Microsoft.FeatureManagement.AspNetCore" Version="2.0.0" />
+    <PackageReference Include="Microsoft.FeatureManagement.AspNetCore" Version="3.5.0" />
     <PackageReference Include="Serilog.AspNetCore" Version="7.0.0" />
     <PackageReference Include="System.Drawing.Common" Version="9.0.1" />
   </ItemGroup>

DigitalLearningSolutions.Web/DigitalLearningSolutions.Web.csproj

@@ -72,7 +72,7 @@
         <PackageReference Include="Microsoft.AspNetCore.Authentication.OpenIdConnect" Version="8.0.12" />
         <PackageReference Include="Microsoft.AspNetCore.Mvc.Razor.RuntimeCompilation" Version="6.0.24" />
         <PackageReference Include="Microsoft.Data.SqlClient" Version="6.0.1" />
-        <PackageReference Include="Microsoft.FeatureManagement" Version="3.1.0" />
+        <PackageReference Include="Microsoft.FeatureManagement" Version="4.0.0" />
         <PackageReference Include="Microsoft.FeatureManagement.AspNetCore" Version="2.5.1" />
         <PackageReference Include="Microsoft.TypeScript.MSBuild" Version="5.4.2">
             <PrivateAssets>all</PrivateAssets>