Update to upstream version '1.22.1'
with Debian dir 105105f6bb6bbacdc415e064b54760c777fc518a

  * d/patches/0004-Skip-flaky-test.patch: Add patch.
    - Skip a test which randomly fails for upstream as well (closes: #996346).
  * d/patches/series: Enable new patch.

  * d/patches/0003-Use-correct-Ruby-version-for-tests.patch: Add patch.
    - Make sure to run test cases with the target Ruby version.
  * d/patches/series: Enable new patch.

  * d/docs: Install README.md.
  * d/watch: Update watch file.
  * d/upstream/metadata: Remove Changelog and update Bug-Submit.

Drop 0003-Fix-typo-to-avoid-test-failure-reverted-in-upstream.patch and 0004-Avoid-thousands-of-lsof-warnings-in-chroot.patch

Update to upstream version '1.21.0'
with Debian dir c555850f30d97d8c0f4f81d6aed9c8daab3fbe9a

Update to upstream version '1.20.1'
with Debian dir fe456cc95fe6c0b8576ba49d4f373b51dc1f1f29

Remove obsolete fields Contact, Name from debian/upstream/metadata (already present in machine-readable debian/copyright).