Bump Microsoft.Extensions.Configuration from 9.0.2 to 9.0.3

Bumps [Microsoft.Extensions.Configuration](https://github.com/dotnet/runtime) from 9.0.2 to 9.0.3.
- [Release notes](https://github.com/dotnet/runtime/releases)
- [Commits](dotnet/runtime@v9.0.2...v9.0.3)

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

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

Author: dependabot[bot]

test/SlowDown.Tests/SlowDown.Tests.csproj

@@ -13,7 +13,7 @@
 
   <ItemGroup>
     <PackageReference Include="coverlet.collector" Version="6.0.4" />
-    <PackageReference Include="Microsoft.Extensions.Configuration" Version="9.0.2" />
+    <PackageReference Include="Microsoft.Extensions.Configuration" Version="9.0.3" />
     <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="9.0.2" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.13.0" />
     <PackageReference Include="MicrosoftExtensions.Logging.Xunit" Version="1.0.0" />