14.2.1: Prevent Popup Race Conditions, (Windows) Folder Picker Initial Path

Just a couple bug fixes in this one!

• Prevent Race Conditions when closing a Popup
• Set initial folder for FilePicker and FolderPicker on Windows

What's Changed

• Prevent Race Condition Allowing Simultaneous Calling of Navigation.PushModalAsync() / Shell.GotoAsync() in PopupExtensions by @TheCodeTraveler in #3234
• Add SemaphoreSlim Support for Popup CloseAsync to Avoid Race Conditions by @TheCodeTraveler in #3235
• Set Windows Folder Picker Initial Path by @TheCodeTraveler in #3078

Housekeeping

• Bump actions/checkout from 6.0.2 to 6.0.3 by @dependabot[bot] in #3236
• Bump Microsoft.Testing.Extensions.CodeCoverage from 18.7.0 to 18.8.0 by @dependabot[bot] in #3237
• Bump System.Formats.Asn1 from 10.0.8 to 10.0.9 by @dependabot[bot] in #3238
• Bump actions/checkout from 6.0.3 to 7.0.0 by @dependabot[bot] in #3245
• Bump actions/setup-java from 5.2.0 to 5.3.0 by @dependabot[bot] in #3246
• Bump actions/setup-java from 5.3.0 to 5.4.0 by @dependabot[bot] in #3256
• Bump actions/setup-dotnet from 5.3.0 to 5.4.0 by @dependabot[bot] in #3257
• Bump actions/setup-java from 5.4.0 to 5.5.0 by @dependabot[bot] in #3264

Full Changelog: 14.2.0...14.2.1