macOS: Add /opt/homebrew to CMAKE_SYSTEM_PREFIX_PATH
According to https://brew.sh/2020/12/01/homebrew-2.6.0/ the /opt/homebrew
directory is recommended for installing ARM architecture brew packages.
Fixes: #21585 (closed)
Backport: release
According to https://brew.sh/2020/12/01/homebrew-2.6.0/ the /opt/homebrew
directory is recommended for installing ARM architecture brew packages.
Fixes: #21585 (closed)
Backport: release