Bump coverlet.msbuild from 3.0.2 to 3.1.2#23

dependabot[bot] wants to merge 1 commit intomasterbert2/Nullable.Extensions:masterfrom

dependabot/nuget/coverlet.msbuild-3.1.2bert2/Nullable.Extensions:dependabot/nuget/coverlet.msbuild-3.1.2Copy head branch name to clipboard