You can get rid of it by simply printing slower. The problem is that extrusion needs to stop while moving Z but it never really stops. But if you print slower then the pressure is lower. At 20mm/sec it mostly disappears. It also helps to increase Z acceleration because then the Z moves much faster. You can make the Z move so fast it's almost a click.
Then there is also the "spiralize" feeature in Cura but that is very specialized and only works on a tiny tiny subset of models. Mostly cups and vases that have a solid interior but you want to print single-pass wall thickness.
The issue you are referring to is called 'z-scar'. It's (unfortunately) a speciality of Cura. There are numberous posts about it in this forum. You best find them by googling "z scar site:umforum.ultimaker.com". Forget the search function of the forum; it's just crap...
To make it short: the z-scar is there for the time being and nobody knows if Daid will and can do something sustainable against it soon. One reason is the fact that there are patents protecting algorithms which cover this seam and produce seamless prints.
Daid recently offered the possibility to randomize the spot. Most probably he will answer to your question when he reads it.
If you want to get rid of it right now you have to use a different slicer than Cura.
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