Bump System.Configuration.ConfigurationManager from 10.0.2 to 10.0.4#15

dependabot[bot] wants to merge 1 commit intomastermteinum/efext:masterfrom

dependabot/nuget/EfExt.Tests/System.Configuration.ConfigurationManager-10.0.4mteinum/efext:dependabot/nuget/EfExt.Tests/System.Configuration.ConfigurationManager-10.0.4Copy head branch name to clipboard