Bump ReactiveUIVersion from 19.4.1 to 19.5.1

Bumps `ReactiveUIVersion` from 19.4.1 to 19.5.1.

Updates `ReactiveUI` from 19.4.1 to 19.5.1
- [Release notes](https://github.com/reactiveui/reactiveui/releases)
- [Commits](reactiveui/ReactiveUI@19.4.1...19.5.1)

Updates `ReactiveUI.WPF` from 19.4.1 to 19.5.1
- [Release notes](https://github.com/reactiveui/reactiveui/releases)
- [Commits](reactiveui/ReactiveUI@19.4.1...19.5.1)

Updates `ReactiveUI.XamForms` from 19.4.1 to 19.5.1
- [Release notes](https://github.com/reactiveui/reactiveui/releases)
- [Commits](reactiveui/ReactiveUI@19.4.1...19.5.1)

Updates `ReactiveUI.Fody` from 19.4.1 to 19.5.1
- [Release notes](https://github.com/reactiveui/reactiveui/releases)
- [Commits](reactiveui/ReactiveUI@19.4.1...19.5.1)

Updates `ReactiveUI.Maui` from 19.4.1 to 19.5.1
- [Release notes](https://github.com/reactiveui/reactiveui/releases)
- [Commits](reactiveui/ReactiveUI@19.4.1...19.5.1)

Updates `ReactiveUI.WinForms` from 19.4.1 to 19.5.1
- [Release notes](https://github.com/reactiveui/reactiveui/releases)
- [Commits](reactiveui/ReactiveUI@19.4.1...19.5.1)

---
updated-dependencies:
- dependency-name: ReactiveUI
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: ReactiveUI.WPF
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: ReactiveUI.XamForms
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: ReactiveUI.Fody
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: ReactiveUI.Maui
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: ReactiveUI.WinForms
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Directory.Build.props

@@ -30,7 +30,7 @@
     <AllowedOutputExtensionsInPackageBuildOutputFolder>$(AllowedOutputExtensionsInPackageBuildOutputFolder);.pdb</AllowedOutputExtensionsInPackageBuildOutputFolder>
     <IncludePackageReferencesDuringMarkupCompilation>true</IncludePackageReferencesDuringMarkupCompilation>
     <AvaloniaVersion>11.0.4</AvaloniaVersion>
-    <ReactiveUIVersion>19.4.1</ReactiveUIVersion>
+    <ReactiveUIVersion>19.5.1</ReactiveUIVersion>
   </PropertyGroup>
   <PropertyGroup Condition="'$(GITHUB_ACTIONS)' == 'true'">
     <ContinuousIntegrationBuild>true</ContinuousIntegrationBuild>