Bump FSharp.Core from 8.0.200 to 8.0.400#252

dependabot[bot] wants to merge 1 commit intomainexercism/fsharp-test-runner:mainfrom

dependabot/nuget/FSharp.Core-8.0.400exercism/fsharp-test-runner:dependabot/nuget/FSharp.Core-8.0.400Copy head branch name to clipboard