A long enough list of small changes eventually equates to a big change. People generally can't update applications from Java 8 or below to a new one without code updates.
If hadoop did it, so can you. I'm talking about a project that stretched Java 8 to, and arguably beyond, its intended operational boundaries. Unlikely that you’re leaning on this boundary. It's Spring Boot upgrades that will be giving you troubles.
Meanwhile Go already had a language change, while being less than half its age (loop variable capture).