Correctly handle an edge case in the sequential version check (#563) #1151

Job	Run time
Documentation	2m 9s
Doctests	2m 7s
Unit/Julia 1.3/ubuntu-latest/x64	8m 4s
Unit/Julia 1.4/ubuntu-latest/x64	8m 44s
Unit/Julia 1.5/ubuntu-latest/x64	7m 51s
Unit/Julia 1.6/ubuntu-latest/x64	5m 18s
Unit/Julia 1.7/ubuntu-latest/x64	6m 1s
Unit/Julia 1.8/ubuntu-latest/x64	5m 17s
Unit/Julia 1/ubuntu-latest/x64	5m 0s
Unit/Julia nightly/ubuntu-latest/x64	1m 29s
	52m 0s

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