Bump Microsoft.Extensions.Hosting.Abstractions from 5.0.0 to 7.0.0 in /Source#40

dependabot[bot] wants to merge 1 commit intomasterswegele/csla:masterfrom

dependabot/nuget/Source/Microsoft.Extensions.Hosting.Abstractions-7.0.0swegele/csla:dependabot/nuget/Source/Microsoft.Extensions.Hosting.Abstractions-7.0.0Copy head branch name to clipboard