Switch to ReTestItems.jl. #607

Job	Run time
Julia 1.8 - ubuntu-latest - x64	2m 0s
Julia 1.8 - macOS-latest - x64	2m 45s
Julia 1.8 - windows-latest - x64	4m 23s
Julia 1.9 - ubuntu-latest - x64	1m 41s
Julia 1.9 - macOS-latest - x64	2m 29s
Julia 1.9 - windows-latest - x64	3m 23s
Julia nightly - ubuntu-latest - x64	2m 0s
Julia nightly - macOS-latest - x64	3m 55s
Julia nightly - windows-latest - x64	33m 20s
Julia nightly --opaque-pointers - ubuntu-latest - x64	2m 14s
Julia nightly --opaque-pointers - macOS-latest - x64	3m 2s
Julia nightly --opaque-pointers - windows-latest - x64	33m 57s
Julia release-1.8 - ubuntu-latest - x64	18m 12s
Julia release-1.8 - macOS-latest - x64	17m 16s
Julia release-1.8 - windows-latest - x64	4m 53s
Julia release-1.9 - ubuntu-latest - x64	20m 37s
Julia release-1.9 - macOS-latest - x64	24m 56s
Julia release-1.9 - windows-latest - x64	33m 36s
Julia master - ubuntu-latest - x64	22m 36s
Julia master --opaque-pointers - ubuntu-latest - x64	27m 28s
Documentation	39s
	4h 25m 22s

Provide feedback