CI: Fix OSX post-install script

Closes jp9000/obs-studio#789

CI/install/osx/post-install.sh

@@ -1,4 +1,5 @@
 #!/usr/bin/env bash
 
 # Fix permissions on CEF
-chmod 744 "/Library/Application Support/obs-studio/plugins/obs-browser/bin/CEF.app/Contents/Info.plist"
+chmod 744 "/Library/Application Support/obs-studio/plugins/obs-browser/bin/CEF.app/Contents/Info.plist"
+chmod 744 "/Library/Application Support/obs-studio/plugins/obs-browser/bin/CEF.app/Contents/Frameworks/CEF Helper.app/Contents/Info.plist"