Quoted from rai:

I heard this phrase from my kids they said there’s a thing called silently quitting or quit quitting.
It means not really quitting but just doing the absolute minimum possible to keep your job.
Quiet quitting is a term and a trend that emerged in mid-2022 from a viral TikTok video. The philosophy of quiet quitting is not abruptly leaving a job but doing exactly what the job requires, no more no less.[1] The main objective of this mindset is avoiding occupational burnout and paying more attention to one's mental health and personal well-being.
https://en.m.wikipedia.org/wiki/Quiet_quitting