Fontconfig file does not include regular Fira Code variant
#### 🗹 Requirements

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#### 🎯 Subject of the issue

Experienced behavior:
Since v2.2, the fontconfig file in the root of this repo doesn't include configuration for `Fira Code` (or `Fira Code Regular`).
https://github.com/ryanoasis/nerd-fonts/blob/5454877c01e5efb4b902151655f75d950678dc34/10-nerd-font-symbols.conf#L1036-L1051

Expected behavior:
Prior to v2.2, the fontconfig file in the root of this repo included configuration for `Fira Code` (or `Fira Code Regular`).
https://github.com/ryanoasis/nerd-fonts/blob/fa69496f5a3291fbcb6c0ad5bcec9c8bcab842fc/10-nerd-font-symbols.conf#L24-L39

Example symbols:
N/A

#### 🔧 Your Setup

- _Which font are you using (e.g. `Anonymice Powerline Nerd Font Complete.ttf`)?_
   - `FiraCode-Regular.ttf` (unpatched Fira Code)
   - `Symbols-2048-em Nerd Font Complete.ttf` (From AUR package, v2.2)
- _Which terminal emulator are you using (e.g. `iterm2`, `urxvt`, `gnome`, `konsole`)?_
  - kitty
- _Are you using OS X, Linux or Windows? And which specific version or distribution?_
  - Linux

#### ★ Screenshots (Optional)
N/A