ActiveRecord::QueryCanceled: PG::QueryCanceled: ERROR: canceling statement due to statement timeout

https://sentry.gitlab.net/gitlab/gitlabcom/issues/3091186/?referrer=gitlab_plugin

PG::QueryCanceled: ERROR:  canceling statement due to statement timeout

  lib/gitlab/database/load_balancing/connection_proxy.rb:126:in `block in write_using_load_balancer'
    connection.send(...)
  lib/gitlab/database/load_balancing/load_balancer.rb:112:in `block in read_write'
    yield connection
  lib/gitlab/database/load_balancing/load_balancer.rb:179:in `retry_with_backoff'
    return yield
  lib/gitlab/database/load_balancing/load_balancer.rb:110:in `read_write'
    retry_with_backoff do
  lib/gitlab/database/load_balancing/connection_proxy.rb:125:in `write_using_load_balancer'
    @load_balancer.read_write do |connection|
...
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ActiveRecord::QueryCanceled: PG::QueryCanceled: ERROR:  canceling statement due to statement timeout

PG::QueryCanceled: ERROR:  canceling statement due to statement timeout

Related to #343332 (closed)