ExtensionManagerService changed, causing RuntimeBinderException

[LukasGelke]

System.Exception : Microsoft.CSharp.RuntimeBinder.RuntimeBinderException: No overload for method 'UpdateLastExtensionsChange' takes '0' arguments
       at CallSite.Target(Closure , CallSite , Object )
       at System.Dynamic.UpdateDelegates.UpdateAndExecuteVoid1[T0](CallSite site, T0 arg0)
       at VsixTesting.Installer.ExtensionManagerService.UpdateLastExtensionsChange()
       at VsixTesting.Installer.Installer.Install(String extensionPath, Nullable`1 allUsers)
       at VsixTesting.Installer.Installer.<>c__DisplayClass5_1.<Install>b__0(String path)
       at System.Linq.Enumerable.Count[TSource](IEnumerable`1 source, Func`2 predicate)
       at VsixTesting.Installer.Installer.Install(String applicationPath, String rootSuffix, IEnumerable`1 extensionPaths, Nullable`1 allUsers)
       at VsixTesting.Installer.Program.<>c__DisplayClass1_0.<Run>b__0()
       at VsixTesting.Installer.Program.Run(String applicationPath, String rootSuffix, String[] args)
  Stack Trace: 
    VisualStudioUtil.RunInstallerAsync(VsHive hive, IEnumerable<string> args) line 49
    VisualStudioUtil.InstallExtensionsAsync(VsHive hive, IEnumerable<string> extensions) line 18
    VsInstance+<>c__DisplayClass15_0+<<Prepare>b__0>d.MoveNext() line 54
    IDiagnosticsExtensions+<>c__DisplayClass1_0+<<RunAsync>b__0>d.MoveNext() line 34
    DiagnosticTestRunner<T>+<>c__DisplayClass5_0+<<RunAsync>b__0>d.MoveNext() line 182
    ExecutionTimer.AggregateAsync(Func<Task> asyncAction) line 48
    DiagnosticTestRunner<T>.RunAsync(IMessageBus messageBus, CancellationTokenSource cancellationTokenSource) line 180
    VsInstance.Prepare(VsHive hive, IEnumerable<string> extensionsToInstall, bool resetSettings, IDiagnostics diagnostics, bool installInvoker) line 41
    VsInstanceTestAssemblyRunner.Init(CancellationTokenSource cts) line 110
    VsInstanceTestAssemblyRunner.RunAsync(CancellationTokenSource cts) line 79

Apparently the method ExtensionManagerService.UpdateLastExtensionsChange() in Microsoft.VisualStudio.ExtensionManager.Implementation.dll (and therein used ones) changed and now take a bool named updateClient.
This results in the exception above, when running VsFact-TestMethods.

• Visual Studio Professional 2019 v16.7.2
• Microsoft.VisualStudio.ExtensionManager.Implementation.dll reports 'Date Modified' as 2020-08-13