Bump Microsoft.Extensions.DependencyInjection from 3.1.7 to 3.1.8 (#87)

Bumps [Microsoft.Extensions.DependencyInjection](https://github.com/aspnet/Extensions) from 3.1.7 to 3.1.8.
- [Release notes](https://github.com/aspnet/Extensions/releases)
- [Commits](dotnet/extensions@v3.1.7...v3.1.8)

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CommandLineParser/CommandLineParser.csproj

@@ -39,7 +39,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="3.1.7" />
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="3.1.8" />
     <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="3.1.8" />
   </ItemGroup>