Streamline the macos install process

util/macos_install.sh

@@ -21,11 +21,10 @@ if ! brew --version 2>&1 > /dev/null; then
 	done
 fi
 
-brew tap osx-cross/avr
-brew tap osx-cross/arm
+# All macOS dependencies are managed in the homebrew package:
+#     https://github.com/qmk/homebrew-qmk
 brew update
-brew install avr-gcc@8 arm-gcc-bin dfu-programmer avrdude clang-format dfu-util python3
-brew install --HEAD https://raw.githubusercontent.com/robertgzr/homebrew-tap/master/bootloadhid.rb
+brew install qmk/qmk/qmk
 brew link --force avr-gcc@8
 
 pip3 install -r "${util_dir}/../requirements.txt"