https://www.padok.fr/ https://www.padok.fr/en/blog https://www.padok.fr/en/blog/tag/technology https://www.padok.fr/en/blog/maintain-dependencies-renovate The key to a sustainable codebase: continuous maintenance
Yep, even with the 80% test coverage, you touched on an inconspicuous part of the code which was holding everything together.
https://argocd-image-updater.readthedocs.io/en/stable/ can be seen as a dependency automation tool since it commits new versions to a Git Repository.
As the mass of software keeps growing in your projects, investing in automation is the key to sustainable software companies.