Because they could have a security flaw that might compromise your project or any users of it.
For any of my rust projects I really don't bump my deps unless dependabot shows a serious vulnerability or I want to use a new feature added. Outside of that my deps are locked to the last known good version i use.
alt Hacker News
For any of my rust projects I really don't bump my deps unless dependabot shows a serious vulnerability or I want to use a new feature added. Outside of that my deps are locked to the last known good version i use.