Squeaky wheel after repair 😂

Hi am hoping someone can help, took car to Halfords for MOT but failed in December due to "Offside Front Anti-roll bar linkage ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii))" and brake pad was under 1.5mm so wouldn't let me take car unless I had it recovered.

Instead I got them to do the work as I was in the middle of moving house aswell as Christmas being about a week away and all was well for about a month then I started noticing a slight squeak coming from driver side and assumed it may just bed it self in but instead with the warmer weather and the window open the squeak has become highly annoying.

I am blaming this the work that has being done but instead of me taking it back and kicking off is it just a case of it needs a bit of grease?

More of a builder than a mechanic but I am happy to give anything a go.