Track changes on migrations or update more regularly

Migrated issue

Reported by: fjgarlin

Related to !20 (merged)

Problem/Motivation

As seen on the parent issue, updates on source are not reflected on destination unless we run the migrations with the --update flag.

Proposed resolution

Consider using the track_changes flag (https://www.drupal.org/docs/8/api/migrate-api/migrate-source-plugins/overview-of-migrate-source-plugins#s-migrate-api-track-changes-option) or run the migrations with the --update flag more often.

Related issue: Issue #3496549