Bump Microsoft.Extensions.Configuration from 3.1.4 to 7.0.0

Bumps [Microsoft.Extensions.Configuration](https://github.com/dotnet/runtime) from 3.1.4 to 7.0.0.
- [Release notes](https://github.com/dotnet/runtime/releases)
- [Commits](https://github.com/dotnet/runtime/commits)

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

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

Author: dependabot[bot]

src/examples/AspNetWebApp/AspNetWebApp.csproj

@@ -16,7 +16,7 @@
 
   <ItemGroup>
     <PackageReference Include="Hocon.Extensions.Configuration" Version="2.0.4" />
-    <PackageReference Include="Microsoft.Extensions.Configuration" Version="3.1.4" />
+    <PackageReference Include="Microsoft.Extensions.Configuration" Version="7.0.0" />
     <PackageReference Include="Microsoft.Extensions.Configuration.Abstractions" Version="3.1.4" />
     <PackageReference Include="Microsoft.Extensions.Configuration.FileExtensions" Version="3.1.4" />
     <PackageReference Include="Microsoft.Extensions.FileProviders.Abstractions" Version="3.1.4" />