If you use it at all you are at risk. Copyright is a matter of civil law. Springer's highly skilled and highly paid legal staff will have a say in the outcome. If they press it, you will likely lose.
Their position could well be that the figure is a "work" in itself, separate from the thesis and using it is copying an entire "work". Whether that is a valid judgement or not is less material than the fact that it has to be adjudicated if it is raised. That would likely cost more than the fee.
Your best options are to pay the fee or to reconstruct your own figure from the data that it represents. Small changes probably won't be enough. A third option is to reference the figure (cite it) without reproducing it. Let the reader chase down the image, which is less satisfying, of course.
Note that this is a very conservative bit of advice. But it is you who are at risk here.
But, it may well be that Springer will just let it go, being a small thing at their scale. I don't suggest they will, of course.
Note that grant funds or your university (or employer) may actually be able to pay such fees on your behalf.