chore(deps): update dependency system.reactive to v6.0.1 (#248)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

src/ReactiveMarbles.CacheDatabase.Core/ReactiveMarbles.CacheDatabase.Core.csproj

@@ -8,6 +8,6 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.Bcl.AsyncInterfaces" Version="8.0.0" />
-    <PackageReference Include="System.Reactive" Version="6.0.0" />
+    <PackageReference Include="System.Reactive" Version="6.0.1" />
   </ItemGroup>
 </Project>