OSX/CI: cantor successfully builds on OSX

[Marko Käning]

I thought I might give Cantor another chance on OSX and as it turned out
cantor for KF5 builds successfully now!!!

	\o/




MVM2:scripts marko$ ./install.sh cantor
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Project  : kde/kdeedu/cantor
Branch   : frameworks
Linux-CI : SUCCESS
Calling prepare script
Calling build script
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