PRS DESKTOP/SHARED: update System.Collections.Immutable packages

prs.desktop/PRSDesktop.csproj

@@ -824,6 +824,7 @@
       <PackageReference Include="Syncfusion.Themes.Office2019White.WPF" Version="20.2.0.46" />
       <PackageReference Include="Syncfusion.Themes.SystemTheme.WPF" Version="20.2.0.46" />
       <PackageReference Include="Syncfusion.Tools.WPF" Version="20.2.0.46" />
+      <PackageReference Include="System.Collections.Immutable" Version="7.0.0" />
       <PackageReference Include="System.IO.Ports" Version="6.0.0" />
       <PackageReference Include="WindowsShortcutFactory" Version="1.1.0" />
     </ItemGroup>

prs.shared/PRS.Shared.csproj

@@ -45,6 +45,7 @@
 
   <ItemGroup>
     <PackageReference Include="RestSharp" Version="110.2.0" />
+    <PackageReference Include="System.Collections.Immutable" Version="7.0.0" />
   </ItemGroup>
 
 </Project>