9.2.1

Changes:

• fb91958 feature: Add Prism DI extensions (#431) @glennawatson
• a727eb9 Fix: Typo Splay=>Splat (#425) @rgomez90
• a5bc254 build(deps): bump Microsoft.SourceLink.GitHub (#422) @dependabot
• 4ed51b0 build(deps): bump Microsoft.Reactive.Testing from 4.1.6 to 4.2.0 (#416) @dependabot
• ab5894f build(deps): bump Microsoft.CodeAnalysis.FxCopAnalyzers (#420) @dependabot
• da4ad12 build(deps): bump Microsoft.NET.Test.Sdk from 16.3.0 to 16.4.0 (#424) @dependabot
• 70abe56 build(deps): bump Microsoft.CodeAnalysis.FxCopAnalyzers (#414) @dependabot