Bump FluentAssertions from 6.12.1 to 8.0.0#12

dependabot[bot] wants to merge 1 commit intomainastar-development/astar-dev-utilities:mainfrom

dependabot/nuget/FluentAssertions-8.0.0astar-development/astar-dev-utilities:dependabot/nuget/FluentAssertions-8.0.0Copy head branch name to clipboard