[PowerToys Run] Update to net5 (#12434)

* [Setup] Add support for installing both dotnet 3 and 5 (#12306)

* [PowerToys Run] Update to net5 (#12286)

* Change targets of projects

* Update Microsoft.Toolkit.Uwp.Notifications,

changed TargetFramework for PowerLauncher project in order to resolve an issue with ModernWpf

* Specify windows version in order to fix build errors

* Fixed suppressed warnings

* Updated sdk

* Removed usage of obsolete GlobalAssemblyCache

* Removed obsolete DesktopNotificationManagerCompat

* Update nuget versions

* Update installer

* [PowerToys Run] Obsolete APIs and warnings introduced in .net5 (#12423)

* Change targets of projects

* Update Microsoft.Toolkit.Uwp.Notifications,

changed TargetFramework for PowerLauncher project in order to resolve an issue with ModernWpf

* Fixed suppressed warnings

* Removed obsolete DesktopNotificationManagerCompat

* Get rid of binary formatter

* Update tests

* Don't include new image cache file to the report

* There's no need to call IsOwner as it doesn't make sense

* Fix different nullability exception

* Exclude extra dlls from tests

Co-authored-by: Andrey Nekrasov <yuyoyuppe@users.noreply.github.com>

installer/PowerToysSetup/publish.cmd

@@ -50,7 +50,7 @@ echo   ^<PropertyGroup^> >> !launcherPublishProfile!
 echo     ^<PublishProtocol^>FileSystem^</PublishProtocol^> >> !launcherPublishProfile!
 echo     ^<Configuration^>Release^</Configuration^> >> !launcherPublishProfile!
 echo     ^<Platform^>x64^</Platform^> >> !launcherPublishProfile!
-echo     ^<TargetFramework^>netcoreapp3.1^</TargetFramework^> >> !launcherPublishProfile!
+echo     ^<TargetFramework^>net5.0-windows10.0.18362.0^</TargetFramework^> >> !launcherPublishProfile!
 echo     ^<PublishDir^>..\..\..\..\x64\Release\modules\launcher^</PublishDir^> >> !launcherPublishProfile!
 echo     ^<RuntimeIdentifier^>win-x64^</RuntimeIdentifier^> >> !launcherPublishProfile!
 echo     ^<SelfContained^>false^</SelfContained^> >> !launcherPublishProfile!