build(deps): bump ICSharpCode.Decompiler from 7.1.0.6543 to 7.2.1.6856 (

#110)

Bumps [ICSharpCode.Decompiler](https://github.com/icsharpcode/ILSpy) from 7.1.0.6543 to 7.2.1.6856.
- [Release notes](https://github.com/icsharpcode/ILSpy/releases)
- [Changelog](https://github.com/icsharpcode/ILSpy/blob/master/releasebuild.bat)
- [Commits](https://github.com/icsharpcode/ILSpy/commits)

---
updated-dependencies:
- dependency-name: ICSharpCode.Decompiler
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

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

src/ReactiveMarbles.ObservableEvents.Tests/ReactiveMarbles.ObservableEvents.Tests.csproj

@@ -21,7 +21,7 @@
     </PackageReference>
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="3.11.0" />
     <PackageReference Include="Microsoft.CodeAnalysis.Analyzers" Version="3.3.3" PrivateAssets="all" />
-    <PackageReference Include="ICSharpCode.Decompiler" Version="7.1.0.6543" />
+    <PackageReference Include="ICSharpCode.Decompiler" Version="7.2.1.6856" />
     <PackageReference Include="ReactiveMarbles.NuGet.Helpers" Version="1.0.11" />
   </ItemGroup>