Workaround ICU not found

dotnet/core#2186

Author: Mailaender

HardVacuumRobot/HardVacuumRobot.csproj

@@ -5,6 +5,10 @@
     <TargetFramework>netcoreapp3.1</TargetFramework>
   </PropertyGroup>
 
+  <ItemGroup>
+    <RuntimeHostConfigurationOption Include="System.Globalization.Invariant" Value="true" />
+  </ItemGroup>
+
   <ItemGroup>
     <PackageReference Include="System.Configuration.ConfigurationManager" Version="4.6.0" />
     <PackageReference Include="Discord.Net" Version="3.5.0" />