… it is not your job to stop the bugs (or the versions containing them) from walking out the door.
Your job is to provide visibility into the status of your product and your project, and give everyone on the team the information they need to make their decisions.
After you have given everyone the correct information they will need to make the choice whether to release the product into the field or not. You may be part of this team making the decision, but your voice will never be the only one that counts!
From Joel Montvelisky’s Letter to a starting tester