Bump Microsoft.Extensions.Configuration.FileExtensions

Bumps [Microsoft.Extensions.Configuration.FileExtensions](https://github.com/dotnet/runtime) from 3.1.4 to 6.0.0.
- [Release notes](https://github.com/dotnet/runtime/releases)
- [Commits](https://github.com/dotnet/runtime/commits/v6.0.0)

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

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

src/Hocon.Extensions.Configuration/Hocon.Extensions.Configuration.csproj

@@ -9,7 +9,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.Extensions.Configuration.FileExtensions" Version="3.1.4" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.FileExtensions" Version="6.0.0" />
   </ItemGroup>
 
   <ItemGroup>

src/examples/AspNetWebApp/AspNetWebApp.csproj

@@ -18,7 +18,7 @@
     <PackageReference Include="Hocon.Extensions.Configuration" Version="2.0.4" />
     <PackageReference Include="Microsoft.Extensions.Configuration" Version="3.1.4" />
     <PackageReference Include="Microsoft.Extensions.Configuration.Abstractions" Version="3.1.4" />
-    <PackageReference Include="Microsoft.Extensions.Configuration.FileExtensions" Version="3.1.4" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.FileExtensions" Version="6.0.0" />
     <PackageReference Include="Microsoft.Extensions.FileProviders.Abstractions" Version="3.1.4" />
     <PackageReference Include="Microsoft.Extensions.FileProviders.Physical" Version="3.1.4" />
     <PackageReference Include="Microsoft.Extensions.FileSystemGlobbing" Version="3.1.4" />