Bump MaterialDesignThemes from 5.3.0 to 5.3.1 (#326)

---
updated-dependencies:
- dependency-name: MaterialDesignThemes
  dependency-version: 5.3.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Directory.Packages.props

@@ -7,7 +7,7 @@
     <PackageVersion Include="CommunityToolkit.Mvvm" Version="8.4.0" />
     <PackageVersion Include="Grpc.Tools" Version="2.78.0" />
     <PackageVersion Include="GrpcDotNetNamedPipes" Version="3.1.0" />
-    <PackageVersion Include="MaterialDesignThemes" Version="5.3.0" />
+    <PackageVersion Include="MaterialDesignThemes" Version="5.3.1" />
     <PackageVersion Include="Microsoft.CodeAnalysis.Analyzers" Version="3.11.0" PrivateAssets="all" />
     <PackageVersion Include="Microsoft.CodeAnalysis.CSharp" Version="5.0.0" PrivateAssets="all" />
     <PackageVersion Include="Microsoft.CodeAnalysis.Common" Version="5.0.0" />