Update gitlab-labkit to v0.20.0
This removes the dependency on gitlab-pg_query and adds fingerprinting for SQL sampling.
Diff: https://my.diffend.io/gems/gitlab-labkit/0.18.0/0.20.0
Edited by Stan Hu
This removes the dependency on gitlab-pg_query and adds fingerprinting for SQL sampling.
Diff: https://my.diffend.io/gems/gitlab-labkit/0.18.0/0.20.0