tests: Adapt to glib 2.87.0 #343

Job	Run time
Mageia 8	4m 46s
Arch Linux	2m 21s
openSUSE Tumbleweed	2m 29s
Get Fedora Releases	6s
OpenMandriva Cooker	17s
Installed RPM Tests (Devel Fedora)	0s
Installed RPM Tests (Stable Fedora)	0s
Unit Tests (Devel Fedora)	0s
Unit Tests (Stable Fedora)	0s
	9m 59s

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