#2181 Remove System.Memory from Dotnet 6 (#2193)

Co-authored-by: Robert Yokota <[email protected]>

Author: thompson-tomo

src/Confluent.Kafka/Confluent.Kafka.csproj

@@ -28,20 +28,24 @@
     <PackageReference Include="librdkafka.redist" Version="2.5.0">
       <PrivateAssets Condition="'$(TargetFrameworkIdentifier)' == '.NETFramework'">None</PrivateAssets>
     </PackageReference>
-    <PackageReference Include="System.Memory" Version="4.5.0" />
   </ItemGroup>
 
   <ItemGroup Condition=" '$(TargetFramework)' == 'netstandard1.3' ">
     <PackageReference Include="System.Console" Version="4.3.0" />
     <PackageReference Include="System.Linq" Version="4.3.0" />
+    <PackageReference Include="System.Memory" Version="4.5.0" />
     <PackageReference Include="System.Runtime.InteropServices" Version="4.3.0" />
     <PackageReference Include="System.Runtime.Extensions" Version="4.3.0" />
     <PackageReference Include="System.Threading" Version="4.3.0" />
   </ItemGroup>
 
+  <ItemGroup Condition=" '$(TargetFramework)' == 'netstandard2.0' or '$(TargetFramework)' == 'net462'">
+    <PackageReference Include="System.Memory" Version="4.5.0" />
+  </ItemGroup>
+
   <ItemGroup>
     <None Include="..\..\confluent-logo.png" Pack="true" PackagePath="\" />
     <None Include="..\..\README.md" Pack="true" PackagePath="\" />
   </ItemGroup>
 
-</Project>
+</Project>