Bump PropertyChangedAnalyzers from 3.2.3 to 4.0.0

Bumps [PropertyChangedAnalyzers](https://github.com/DotNetAnalyzers/PropertyChangedAnalyzers) from 3.2.3 to 4.0.0.
- [Release notes](https://github.com/DotNetAnalyzers/PropertyChangedAnalyzers/releases)
- [Changelog](https://github.com/DotNetAnalyzers/PropertyChangedAnalyzers/blob/master/RELEASE_NOTES.md)
- [Commits](https://github.com/DotNetAnalyzers/PropertyChangedAnalyzers/commits)

---
updated-dependencies:
- dependency-name: PropertyChangedAnalyzers
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

ValidCode/ValidCode.csproj

@@ -12,7 +12,7 @@
     <PackageReference Include="MvvmCross" Version="8.0.2" />
     <PackageReference Include="MvvmLight" Version="5.4.1.1" />
     <PackageReference Include="Prism.Wpf" Version="8.1.97" />
-    <PackageReference Include="PropertyChangedAnalyzers" Version="3.2.3" PrivateAssets="all" />
+    <PackageReference Include="PropertyChangedAnalyzers" Version="4.0.0" PrivateAssets="all" />
     <PackageReference Include="ReflectionAnalyzers" Version="0.3.0" PrivateAssets="all" />
     <PackageReference Include="Stylet" Version="1.3.6" />
   </ItemGroup>