DO NOT MERGE THIS: Update pdk_install.md with some tests #355

Job	Run time
spec (ruby 2.7) / spec	50s
spec (ruby 3.2) / spec	1m 7s
acceptance (ruby 2.7 \| ubuntu-latest) / acceptance	12m 55s
acceptance (ruby 3.2 \| ubuntu-latest) / acceptance	16m 24s
acceptance (ruby 2.7 \| windows-2019) / acceptance	37m 58s
acceptance (ruby 3.2 \| windows-2019) / acceptance	54m 3s
	2h 3m 17s

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