Update dependency System.Configuration.ConfigurationManager to v6

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
System.Configuration.ConfigurationManager (source)	nuget	major	4.7.0 -> 6.0.1

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Release Notes

dotnet/runtime

### [`v6.0.1`](https://togithub.com/dotnet/runtime/releases/tag/v6.0.1) [Release](https://togithub.com/dotnet/core/releases/tag/v6.0.1) ### [`v6.0.0`](https://togithub.com/dotnet/runtime/releases/tag/v6.0.0) [Release](https://togithub.com/dotnet/core/releases/tag/v6.0.0)

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Configuration

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