Use Prism 0.28+ for development #1067

Job	Run time
Prism	26s
Coding Style \| 3.0	31s
Main Gem Specs \| RuboCop: master \| 2.7	2m 18s
Main Gem Specs \| RuboCop: master \| 3.0	2m 1s
Main Gem Specs \| RuboCop: v1.57.2 \| 3.3	2m 11s
Specs \| 2.7	42s
Specs \| 3.0	30s
Specs \| 3.1	27s
Specs \| 3.2	28s
Specs \| 3.3	24s
Specs \| head	25s
Coverage \| 2.7	47s
Specs "modern" \| 3.0	38s
Specs \| jruby	44s
Specs \| truffleruby	57s
Specs \| truffleruby-head	1m 4s
	14m 33s

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