Bump Xamarin.Essentials from 1.8.0 to 1.8.1 (#65)

Author: dependabot[bot]

SimpleXamarinGraphQL/SimpleXamarinGraphQL.csproj

@@ -14,7 +14,7 @@
         <PackageReference Include="AsyncAwaitBestPractices.MVVM" Version="7.0.0" />
         <PackageReference Include="Polly" Version="8.2.0" />
         <PackageReference Include="modernhttpclient-updated" Version="3.4.3" />
-        <PackageReference Include="Xamarin.Essentials" Version="1.8.0" />
+        <PackageReference Include="Xamarin.Essentials" Version="1.8.1" />
         <PackageReference Include="GraphQL.Client.Serializer.Newtonsoft" Version="6.0.0" />
         <PackageReference Include="Xamarin.CommunityToolkit.Markup" Version="2.0.6" />
     </ItemGroup>