Merge branch 'sh-update-acme-client' into 'master'

Update acme-client to v2.0.19

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/176465



Merged-by: Stan Hu <stanhu@gmail.com>
Approved-by: Vijay Hawoldar <vhawoldar@gitlab.com>
Approved-by: Halil Coban <hcoban@gitlab.com>