It's not that I'm referring to. It's how likely a change in software will cause more bugs. Specifically, how a bug fix could result in more bugs because of interconnections (that's some layman definition I've constructed based on online stuff)
Looking at your other responses, "software supply chain" may still be a fruitful term to look through. While my example referred to how a dependency could be a vulnerability, you might find something about how updates to those dependencies introduce bugs. I'm thinking about like how changes to Python 3 broke everything. Software supply chains aren't my area of research, but given your descriptions, it sounds like it will still provide worthwhile information.
