[nuget] Bump Microsoft.Extensions.Configuration.UserSecrets

Bumps [Microsoft.Extensions.Configuration.UserSecrets](https://github.com/dotnet/runtime) from 6.0.1 to 8.0.1.
- [Release notes](https://github.com/dotnet/runtime/releases)
- [Commits](dotnet/runtime@v6.0.1...v8.0.1)

---
updated-dependencies:
- dependency-name: Microsoft.Extensions.Configuration.UserSecrets
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Dfe.Data.Common.Infrastructure.CognitiveSearch/Tests/Dfe.Data.Common.Infrastructure.CognitiveSearch.Tests.csproj

@@ -14,7 +14,7 @@
     <PackageReference Include="Faker.Net" Version="2.0.154" />
     <PackageReference Include="Bogus" Version="34.0.2" />
     <PackageReference Include="FluentAssertions" Version="6.11.0" />
-    <PackageReference Include="Microsoft.Extensions.Configuration.UserSecrets" Version="6.0.1" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.UserSecrets" Version="8.0.1" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.1.0" />
     <PackageReference Include="Moq" Version="4.18.4" />
     <PackageReference Include="xunit" Version="2.4.1" />