Bump MvvmCross from 9.0.3 to 9.0.4

Bumps [MvvmCross](https://github.com/MvvmCross/MvvmCross) from 9.0.3 to 9.0.4.
- [Release notes](https://github.com/MvvmCross/MvvmCross/releases)
- [Changelog](https://github.com/MvvmCross/MvvmCross/blob/develop/CHANGELOG.md)
- [Commits](MvvmCross/MvvmCross@9.0.3...9.0.4)

---
updated-dependencies:
- dependency-name: MvvmCross
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

PropertyChangedAnalyzers.Test/PropertyChangedAnalyzers.Test.csproj

@@ -31,7 +31,7 @@
     <PackageReference Include="IDisposableAnalyzers" Version="4.0.2" PrivateAssets="all" />
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.0.1" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.4.1" />
-    <PackageReference Include="MvvmCross" Version="9.0.3" />
+    <PackageReference Include="MvvmCross" Version="9.0.4" />
     <PackageReference Include="MvvmLightLibs" Version="5.4.1.1" />
     <PackageReference Include="NUnit" Version="3.13.3" />
     <PackageReference Include="NUnit3TestAdapter" Version="4.3.1" PrivateAssets="all" />

ValidCode/ValidCode.csproj

@@ -11,7 +11,7 @@
   <ItemGroup>
     <PackageReference Include="Caliburn.Micro" Version="3.2" />
     <PackageReference Include="Gu.Wpf.Reactive" Version="5.0.1" />
-    <PackageReference Include="MvvmCross" Version="9.0.3" />
+    <PackageReference Include="MvvmCross" Version="9.0.4" />
     <PackageReference Include="MvvmLightLibs" Version="5.4.1.1" />
     <PackageReference Include="Prism.Wpf" Version="8.1.97" />
     <PackageReference Include="PropertyChangedAnalyzers" Version="4.0.0" PrivateAssets="all" />