Bump Polyfill from 7.30.0 to 9.7.0#9

dependabot[bot] wants to merge 1 commit intomainMBSbigos/LineFire:mainfrom

dependabot/nuget/src/Shouldly.Tests/Polyfill-9.7.0MBSbigos/LineFire:dependabot/nuget/src/Shouldly.Tests/Polyfill-9.7.0Copy head branch name to clipboard