ci: Fix macOS brew install command

Details: Homebrew/discussions#691

Github-Pull: #21663
Rebased-From: b738155

.cirrus.yml

@@ -131,8 +131,9 @@ task:
 
 task:
   name: 'macOS 10.14 native [GOAL: install] [GUI] [no depends]'
-  macos_brew_addon_script:
-    - brew install boost libevent berkeley-db4 qt miniupnpc ccache zeromq qrencode sqlite libtool automake pkg-config gnu-getopt
+  brew_install_script:
+    - brew update
+    - brew install boost libevent berkeley-db4 qt@5 miniupnpc ccache zeromq qrencode sqlite libtool automake pkg-config gnu-getopt
   << : *GLOBAL_TASK_TEMPLATE
   osx_instance:
     # Use latest image, but hardcode version to avoid silent upgrades (and breaks)