test

Make PStore tests as optional #172

Job	Run time
ruby-versions / Generate Ruby versions	4s
build (2.5 / ubuntu-latest)	18s
build (2.5 / windows-latest)	1m 41s
build (2.6 / ubuntu-latest)	21s
build (2.6 / macos-latest)	42s
build (2.6 / windows-latest)	1m 47s
build (2.7 / ubuntu-latest)	20s
build (2.7 / macos-latest)	28s
build (2.7 / windows-latest)	1m 48s
build (3.0 / ubuntu-latest)	7s
build (3.0 / macos-latest)	13s
build (3.0 / windows-latest)	1m 19s
build (3.1 / ubuntu-latest)	7s
build (3.1 / macos-latest)	12s
build (3.1 / windows-latest)	1m 24s
build (3.2 / ubuntu-latest)	13s
build (3.2 / macos-latest)	10s
build (3.2 / windows-latest)	1m 33s
build (3.3 / ubuntu-latest)	7s
build (3.3 / macos-latest)	11s
build (3.3 / windows-latest)	2m 52s
build (3.4 / ubuntu-latest)	5s
build (3.4 / macos-latest)	19s
build (3.4 / windows-latest)	1m 24s
build (head / ubuntu-latest)	7s
build (head / macos-latest)	17s
build (jruby / ubuntu-latest)	37s
build (jruby-head / ubuntu-latest)	38s
build (truffleruby / ubuntu-latest)	23s
build (truffleruby / macos-latest)	16s
build (truffleruby-head / ubuntu-latest)	26s
build (truffleruby-head / macos-latest)	19s
build (mingw / windows-latest)	43s
build (mswin / windows-latest)	2m 15s
	23m 46s

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