Switch to ReTestItems.jl (#505) #1054

Job	Run time
Julia 1.8 - ubuntu-latest - x64	1m 57s
Julia 1.8 - macOS-latest - x64	3m 30s
Julia 1.8 - windows-latest - x64	3m 0s
Julia 1.9 - ubuntu-latest - x64	2m 31s
Julia 1.9 - macOS-latest - x64	4m 43s
Julia 1.9 - windows-latest - x64	3m 22s
Julia 1.10.0-beta2 - ubuntu-latest - x64	3m 9s
Julia 1.10.0-beta2 - macOS-latest - x64	3m 47s
Julia 1.10.0-beta2 - windows-latest - x64	6m 24s
Julia release-1.8 - ubuntu-latest - x64	14m 35s
Julia release-1.8 - macOS-latest - x64	20m 13s
Julia release-1.9 - ubuntu-latest - x64	19m 28s
Julia release-1.9 - macOS-latest - x64	22m 23s
Julia release-1.9 - windows-latest - x64	28m 27s
Julia release-1.10 - ubuntu-latest - x64	23m 36s
Julia master - ubuntu-latest - x64	20m 54s
	3h 1m 59s

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