[automated] Merge branch 'release/6.0-preview5' => 'main' (#32885)

- no-op merge

* Update dependencies from https://github.com/dotnet/efcore build 20210519.2 (#32855)

[release/6.0-preview5] Update dependencies from dotnet/efcore

* Update dependencies from https://github.com/dotnet/runtime

 build 20210520.4 (#32882)

[release/6.0-preview5] Update dependencies from dotnet/runtime

* [preview5] Revert SDK update (#32785) (#32859)
  * Revert SDK update
  * Disable build of failing proj
  * Quarantine 2 tests
  * Fixup

  - backport of 57b9c132

Co-authored-by: William Godbe <wigodbe@microsoft.com>
Co-authored-by: Pranav K <prkrishn@hotmail.com>
Co-authored-by: dotnet-maestro[bot] <42748379+dotnet-maestro[bot]@users.noreply.github.com>
Co-authored-by: Doug Bunting <6431421+dougbu@users.noreply.github.com>
Co-authored-by: William Godbe <wigodbe@microsoft.com>
Co-authored-by: Pranav K <prkrishn@hotmail.com>