* upstream/master: (64 commits)
  Update the 8.11 to 8.12 update documentation to use gitlab-shell 3.5.0
  Update GITLAB_SHELL_VERSION
  Move pushes_since_gc to Redis
  Fix Gitlab::Popen.popen thread-safety issue
  Allow trailing newline in secret base64 data
  Improve .haml-lint.yml, simplify the haml_lint task and remove CHANGELOG entry
  Fix a typo in documentation
  Restore SSH Key title auto-population behavior
  Add test with inactive error use case for 'POST /ci/api/v1/builds/register.json'
  Fix rubocop offences
  Update API documentation
  Update CHANGELOG
  Change response for /ci/api/v1/builds/register.json from 404 to 204
  Document the fact that merge requests from private forks can be checked out locally
  Change method name to #reopenable?
  Improve grammar
  Fix not working test with execute
  Add CHANGELOG
  Improve grammar
  Add #can_reopen? and tests
  ...