Sounds like 1 of two things to me. You can put motor oil (prefer used) on your struts to see if that helps. Another thing it could be is the a-arm bushings causing the squeaking. You can take the bolt out of the one side and grease them up and take the two bolts holding it to the frame on the other side to apply grease.
I had this a very long time ago and believe I used motor oil on my struts, can't remember now. Hope that helps.
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