Fira Code Nerd Font Mono is not displaying == sign correctly
#### 🗹 Requirements

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#### 🎯 Subject of the issue

Experienced behavior:
**==** sign not displaying properly with **FiraCode Nerd Font Mono Medium**.  Few days ago ( Saturday or Sunday ) I updated the Fira Code Nerd Font. Before that everything was displaying correctly.

Expected behavior:
Expect to display properly as with original Fira Code Medium or FiraCode Nerd Font Medium.

If I use **FiraCode Nerd Font Medium** or **Fira Code Medium** than icons in vim are clipped.
So if you can please fix the **==** sign or revert to the patch from 9 days ago, when all was good.

Example symbols:

#### 🔧 Your Setup

- _Which font are you using (e.g. `Anonymice Powerline Nerd Font Complete.ttf`)?_
   - _Please give the full filename_ 
       Fira Code Medium Nerd Font Complete Mono.ttf

   - _Where did you get the file from (download link, self patched, source downloaded from link...)_ 
       https://github.com/ryanoasis/nerd-fonts/tree/master/patched-fonts/FiraCode

- _Which terminal emulator are you using (e.g. `iterm2`, `urxvt`, `gnome`, `konsole`)?_
    **st** terminal with ligatures patch 
- _Are you using OS X, Linux or Windows? And which specific version or distribution?_
    Linux - Manjaro XFCE

#### ★ Screenshots (Optional)

![st_correct](https://user-images.githubusercontent.com/22682262/196760515-ed8ab056-ec4c-4902-ac3b-0b126fd57ebf.png)

st call inside config.h 
``static char *font = "FiraCode Nerd Font:style=Medium:size=12:antialias=true:autohint=true";``


![st_incorrect](https://user-images.githubusercontent.com/22682262/196760682-a6f010f0-ff6a-489e-84cc-7b8bac9a8829.png)

st call inside config.h
``static char *font = "FiraCode Nerd Font Mono:style=Medium:size=12:antialias=true:autohint=true";``

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