@Sky Aisling :-
Mm. Well, it WAS released just over a year ago. Anything released between the long-term ESR builds tends to be like the "6-month wonders" in Ubuntu's line-up; they get all the cutting-edge 'goodies', but all they really are is 'testing' builds to gauge user reaction in preparation for the next LTS (Long Term Support) release.
- 6-month wonders get just 9 months support
- LTS builds get a standard 5 years of support, with the option of adding a further 5 years for a small fee
That's only by way of illustration, of course.
========================
I don't know what, exactly, Mozilla's support timeline looks like on their browsers. I know the ESR builds get around 18-20 months of support; I do NOT know what the schedule is for these 'in-between' releases, but I always understood it to be no more than 7-8 months as a rule, although you often get a 'grace period' before they pull the plug. 116.0.2 is definitely on 'borrowed time' as far as Mozilla are concerned; as they say, much of the media stuff will soon begin to misbehave (due, mainly, to out-of-date certificates), but for a simple site like this Forum it'll continue to function happily for years.
As m'colleague @bigpup says, you should be able to update it internally. Go to the 'hamburger' menu button (top right corner.....like three little horizontal lines, one above the other) -> Help -> About. It'll start downloading straight away, then you'll shortly see a button appear, "Restart to Update Firefox". Just click on that, and it SHOULD restart into the newest version, which is currently @ v135.0.
(This IS dependent on your 'Firefox Update' settings. My guess is you have it set to "Check for updates but let you choose to install them". Me, I prefer "Automatically install updates (recommended)"...)
Let us know what happens, please.
Mike. 