How can I reduce Chart Area without resizing Plot Area of a graph?

Hello, I have a situation that maybe you could help me with:
I have this graph to which I'm trying to reduce the height and width of the chart area because I want to reposition it very near the top border of the worksheet, and the size of the chart area does not allow me go further up, when I try to resize the chart area, the plot area also resizes with it. i've tried many ways and bibliography about this question haven't helped me yet. Is there a way to reduce the chart area without affecting the size of the plot area? Maybe a VBA code that could help.

I'm sending an image to illustrate what I mean and also a file with the graph with the problem.

Many thanks for this.

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