Not to be “that guy” but they left the solar system in 2012 and 2018, as in crossed the heliopause and the “wall of fire”.
Your point stands, but I thought you might be interested to know that :)
Here’s an article about it https://www.iflscience.com/nasas-voyager-spacecraft-found-a-30000-50000-kelvin-wall-at-the-edge-of-our-solar-system-81411