Sync the CHANGELOG.md file from GitLab -> GitHub
As part of creating Renovate MRs, Renovate will post a summary of changes in the new versions. When it does this, it appears to link to the CHANGELOG.md file on GitHub. We should sync our CHANGELOG.md file so that this works appropriately.
Here is an example of a Renovate MR suggesting updates to a provider: patricks-projects/gitlab-runner-eks!20 (merged)