Well the uprights shouldn't bend much - I mean they should just bounce back. when you have strong overhangs like as you approach the top of this arch, you get raised edges on the edge that overhangs. You can reduce this by cranking the fan to max but by default the fan should already be on max. If you can add more fans to your print head that will definitely help.
Baring that you could add some kind of temporary support - maybe connect the two arches together when the arch hits about 45 degrees of overhang. To stiffen it up during printing. This should be unnecessary.
You could also thicken those arms in the Y direction as shown in picture above. The strength/stiffness is proportional to the cube of the thickness so adding just 10% thicker will make it 30% stiffer. 50% thicker will be 3.3X stiffer.
You could also consider printing this in 2 parts. The basket as one part and the handle as a second part (printed on it's side). Make sure there is lots of surface area of contact and strongly consider putting some kind of groove or something to help position the parts during gluing and also for mechanical strengthening later.
cyanoacrylate (super glue) works well on pla.
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gr5 2,224
For those too lazy to download the STL, here is his object.
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