dont include System.Collections.Immutable on net10 (#662)

Author: SimonCropp

src/DiffEngine/DiffEngine.csproj

@@ -19,7 +19,7 @@
     <PackageReference Include="EmptyFiles" PrivateAssets="None" />
     <PackageReference Include="Fody" PrivateAssets="all" />
     <PackageReference Include="System.Collections.Immutable"
-                      Condition="'$(TargetFramework)' != 'net8.0' AND '$(TargetFramework)' != 'net9.0'" />
+                      Condition="'$(TargetFramework)' != 'net8.0' AND '$(TargetFramework)' != 'net9.0' AND '$(TargetFramework)' != 'net10.0'" />
     <PackageReference Include="Polyfill" PrivateAssets="all" />
     <PackageReference Include="System.Management" />
     <PackageReference Include="ProjectDefaults" PrivateAssets="all" />