Simplified the version string parser

[breiler]

Simplified the version string parser to just getting the major, minor and patch character from the version string.

[bLouChip]

The latest nightly build snapshot with this fix worked first time every time that I attempted a USB connection.
Thank you for handling so quickly. well done.
console results [partial] upon connection...

*** Connecting to jserialcomm://COM3:115200
Grbl 1.1i MR MegaV bLouChip Tri-CAM Open Frame Bed ['$' for help]
>>> ?
ok
>>> $I
[VER:1.1i MR MegaV bLouChip Tri-CAM Open Frame Bed.V4-20230217:]
[AXS:4:XYZA]
[OPT:VNMPHRL,35,255]
ok
$$ report followed...