Upgrading wpa_supplicant from 2.10-34-1-x86_64 to 2.11-35-1-x86_64 broke the ability to connect to WiFi. I've temporarily fixed the issue by running
sudo eopkg it https://packages.getsol.us/unstable/w/wpa_supplicant/wpa_supplicant-2.10-34-1-x86_64.eopkg
Hopefully this helps someone. Here are my system specs from fastfetch.
OS: Solus resilience 4.5 x86_64
Host: MacBookPro12,1 (1.0)
Kernel: Linux 6.9.12-297.current
Uptime: 23 mins
Packages: 1543 (eopkg), 4 (flatpak)
Shell: bash 5.2.32
Display (Color LCD): 2560x1600 @ 60 Hz in 13″ [Built-in]
DE: Budgie 10.9.2
WM: Mutter(Budgie) (X11)
Theme: Materia-dark [GTK2/3/4]
Icons: Papirus [GTK2/3/4]
Font: Noto Sans (9pt) [GTK2/3/4]
Cursor: breeze (24px)
Terminal: GNOME Terminal 3.52.2
Terminal Font: BlexMono Nerd Font (9pt)
CPU: Intel(R) Core(TM) i5-5257U (4) @ 3.10 GHz
GPU: Intel Iris Graphics 6100 @ 1.05 GHz [Integrated]
Memory: 2.98 GiB / 7.66 GiB (39%)
Swap: 0 B / 16.46 GiB (0%)
Disk (/): 159.75 GiB / 223.95 GiB (71%) - f2fs
Local IP (wlp3s0): 192.168.50.187/24
Battery: 63% [Discharging]
Locale: en_US.utf8