The STEP file doesn't correspond the specification

If we look at the [Specification](https://github.com/bigtreetech/MicroProbe/blob/master/MicroProbe%20V2%20User%20Manual_20240330.pdf), we can find that the length of the pulled probe from the bottom plane of the case is 4.12mm. If we measure the length of the pulled probe in the [STEP file](https://github.com/bigtreetech/MicroProbe/blob/master/BIQU%20microprobe%20mockup.STEP) we have got 5.5mm. The real length is 4.12m as in the PDF file. Please, fix the STEP.

Compare the dimensions in MicroProbe V2 User Manual_20240330.pdf with BIQU microprobe mockup.STEP, focusing on the pulled probe length from the case bottom plane. Inspect the STEP geometry in a suitable CAD viewer or editor, update the model so that dimension is 4.12 mm, and verify the saved STEP file against the specification.

Written by the indexing model from the issue text.