Update dependency Splat to 19.4.1

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
Splat	19.3.1 → 19.4.1

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Release Notes

reactiveui/splat (Splat)

v19.4.1: 19.4.1

🔏 19.4.1 — consolidated, re-signed release

This is the recommended release. It supersedes and folds in 19.3.1, which was signed with a code-signing certificate that has since been revoked — NuGet restore fails on it with NU3012. 19.4.1 is re-signed with a valid certificate; the superseded 19.3.1 release has been removed and its notes consolidated here.

🗞️ What's Changed

💥 Breaking

• Drop .NET MAUI 9 platform targets (#​1586)
• Remove Tizen bitmap code; simplify platform detection (#​1583)

✨ Improvements

• Refactor CompositeDisposable for thread-safety and performance (#​1477)
• Cross-platform targeting — compile .NET Framework, Windows and Android targets on non-Windows hosts (#​1581, #​1582)
• Remove a dead System.Reactive package reference from Splat.Core (#​1579)

🐛 Fixes

• Fix intermittent Raygun test crash caused by unobserved task exceptions (#​1510)

📝 Documentation

• Add and improve XML documentation for public APIs (#​1476)
• Update copyright year to 2026 across source files (#​1474)

🧹 Build, CI & signing

• Migrate signing from SSL.com eSigner to Certum SimplySign (container signing)
• Switch versioning from Nerdbank.GitVersioning to MinVer
• Pin 3rd-party actions to commit SHAs (CodeQL)

📦 Dependencies

• Routine dependency/test-stack updates by @​renovate[bot]

🔗 Full Changelog: reactiveui/splat@19.2.1...v19.4.1

🙌 Contributions

💖 Thanks to all the contributors — @​glennawatson, @​ChrisPulman (see the linked PRs for attribution).

🤖 Automated services that contributed: @​renovate[bot]

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