Fix the find_qmlimporter_path test on FreeBSD #250

Job	Run time
i386 appimage	7m 20s
armhf appimage	7m 41s
x86_64 coverage	5m 57s
x86_64 appimage	5m 50s
aarch64 appimage	7m 24s
Create release and upload artifacts	34s
	34m 46s

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