mozjs is the SpiderMonkey JavaScript engine from Firefox ESR. Firefox
ESR's 140 branch has had its final release and is no longer supported
as of today. Ideally, we would switch the reverse-depends gjs and cjs
to mozjs 153 before Debian 14 is released.

https://whattrainisitnow.com/release/?version=esr

Thank you,
Jeremy Bícha