[READY] v2.x - Allow `RubySaml::Utils.is_cert_expired` and `is_cert_active` to accept an optional time argument #412

Job	Run time
rubocop	12s
Unit test (ubuntu-20.04, 3)	1m 45s
Unit test (ubuntu-20.04, 3.1)	1m 50s
Unit test (ubuntu-20.04, 3.2)	1m 45s
Unit test (ubuntu-20.04, 3.3)	1m 45s
Unit test (ubuntu-20.04, jruby-9.4)	2m 35s
Unit test (ubuntu-20.04, truffleruby)	3m 40s
Unit test (macos-latest, 3)	1m 31s
Unit test (macos-latest, 3.1)	1m 32s
Unit test (macos-latest, 3.2)	1m 27s
Unit test (macos-latest, 3.3)	1m 31s
Unit test (macos-latest, jruby-9.4)	2m 0s
Unit test (macos-latest, truffleruby)	2m 34s
Unit test (windows-latest, 3)	3m 17s
Unit test (windows-latest, 3.1)	4m 37s
Unit test (windows-latest, 3.2)	3m 2s
Unit test (windows-latest, 3.3)	3m 7s
finish	4s
	38m 14s

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