Fix Slash Length and Angle for ⱥ and ɇ in NotoSans{Italic,Mono}

[YusukeShirakihara]

Hello. I appreciate all the effort you’ve put into the font.

This request continues from the one previously posted by @KazunariTsuboi : #389
It has been applied in the glyphspackage format.

I have adjusted the length and angle of the slashes ⱥ (U+2C65) and ɇ (U+0247) used by Mazahua language.
The designs for ⱥ (U+2C65) and ɇ (U+0247) have not changed from the previous request.
The design adjustments were made on all masters while maintaining the multiple master relationship in this work.

Screenshots:
ȺɆØꞸⱥɇøꞹ

Before
Mono

Italic

Sans (for reference)

After (this PR)
Mono

Italic

Thank you for considering this request.
Special thanks to @KazunariTsuboi for your cooperation.