[xmlunit/xmlunit.net] 50b0de: skip Release build in CI, try building latest .NET...

[Stefan B. <no...@gi...>]

  Branch: refs/heads/main
  Home:   https://github.com/xmlunit/xmlunit.net
  Commit: 50b0de7c987253bede7e48e4d65739ba663d1537
      https://github.com/xmlunit/xmlunit.net/commit/50b0de7c987253bede7e48e4d65739ba663d1537
  Author: Stefan Bodewig <bo...@ap...>
  Date:   2023-03-14 (Tue, 14 Mar 2023)

  Changed paths:
    M appveyor.yml

  Log Message:
  -----------
  skip Release build in CI, try building latest .NET Framework as well