Bump Microsoft.Extensions.Configuration.FileExtensions (#274)

Bumps [Microsoft.Extensions.Configuration.FileExtensions](https://github.com/aspnet/Extensions) from 3.1.2 to 3.1.3.
- [Release notes](https://github.com/aspnet/Extensions/releases)
- [Commits](dotnet/extensions@v3.1.2...v3.1.3)

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

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Author: dependabot-preview[bot]

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

@@ -9,7 +9,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.Extensions.Configuration.FileExtensions" Version="3.1.2" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.FileExtensions" Version="3.1.3" />
   </ItemGroup>
 
   <ItemGroup>