Support JET@0.12 in tests #765

Job	Run time
Julia pre - ubuntu-latest	4m 42s
Documentation	1m 47s
Julia min-patch - windows-latest	5m 47s
Julia pre - windows-latest	5m 58s
Julia lts - windows-latest	5m 31s
Julia 1 - windows-latest	10m 0s
Julia 1 - macOS-latest	6m 19s
Julia min-patch - ubuntu-latest	4m 41s
Julia min-patch - macOS-latest	4m 45s
Julia 1 - ubuntu-latest	8m 37s
Julia lts - ubuntu-latest	4m 47s
Julia pre - macOS-latest	5m 11s
Julia lts - macOS-latest	3m 4s
	1h 11m 9s

Navigation Menu