Update .NET 5.0 version numbers in 6.0 branch to final versions once .NET 5.0 releases #8974
Description
This is a follow-up from #8973 which we need to do after the GA of .NET 5.
We'll need to update the following in GenerateBundledVersions.targets:
<!-- TODO: Once .NET 5.0 has released, update these version numbers to 5.0.0 -->
<_NET50RuntimePackVersion>5.0.0-rc.2.20475.5</_NET50RuntimePackVersion>
<_NET50TargetingPackVersion>5.0.0-rc.2.20475.5</_NET50TargetingPackVersion>
<_WindowsDesktop50RuntimePackVersion>5.0.0-rc.2.20475.6</_WindowsDesktop50RuntimePackVersion>
<_WindowsDesktop50TargetingPackVersion>5.0.0-rc.2.20475.6</_WindowsDesktop50TargetingPackVersion>
<_AspNet50RuntimePackVersion>5.0.0-rc.2.20475.17</_AspNet50RuntimePackVersion>
<_AspNet50TargetingPackVersion>5.0.0-rc.2.20475.17</_AspNet50TargetingPackVersion>Also, once templates have been updated to target .NET 6.0, we should remove the logic in ProjectBuildTests to retarget the projects after creating them.