Tests

update pullback tolerances #602

Job	Run time
Tests (lts, ubuntu-latest) / Julia lts - ubuntu-latest	21m 52s
Tests (lts, windows-latest) / Julia lts - windows-latest	24m 25s
Tests (1, windows-latest) / Julia 1 - windows-latest	30m 18s
Tests (1, ubuntu-latest) / Julia 1 - ubuntu-latest	26m 0s
Tests (lts, macOS-latest) / Julia lts - macOS-latest	18m 24s
Tests (1, macOS-latest) / Julia 1 - macOS-latest	18m 19s
	2h 19m 18s

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