git: Update macOS version requirement in readme

#1647

.github/workflows/build.yml

@@ -153,7 +153,6 @@ jobs:
 
     - name: ⬇️ Install dependencies
       run: |
-        set -x
         brew reinstall python || brew link --overwrite python || true
         brew bundle --no-lock --file dist/Brewfile
         rm -rf /usr/local/Cellar/capstone

README.md

@@ -318,7 +318,8 @@ To use ImHex, the following minimal system requirements need to be met.
 
 - **OS**: 
   - **Windows**: Windows 7 or higher (Windows 10/11 recommended)
-  - **macOS**: macOS 11 (Big Sur) or higher, 
+  - **macOS**: macOS 12.1 (Monterey) or higher, 
+    - Lower versions are supported, but you'll need to compile ImHex yourself
   - **Linux**: "Modern" Linux. The following distributions have official releases available. Other distros are supported through the AppImage and Flatpak releases.
     - Ubuntu 22.04/23.04
     - Fedora 36/37