Prevent a warning: method redefined; discarding old included #147

Job	Run time
ruby-versions / Generate Ruby versions	5s
ubuntu-20.04 2.3	1m 26s
ubuntu-20.04 2.4	1m 13s
ubuntu-20.04 2.5	1m 46s
ubuntu-20.04 2.6	1m 34s
ubuntu-20.04 2.7	1m 18s
ubuntu-20.04 3.0	32s
ubuntu-20.04 3.1	41s
ubuntu-20.04 3.2	49s
ubuntu-20.04 head	43s
ubuntu-20.04 jruby	1m 29s
ubuntu-20.04 jruby-head	2m 14s
ubuntu-20.04 truffleruby	1m 1s
ubuntu-20.04 truffleruby-head	1m 17s
ubuntu-22.04 2.3	1m 12s
ubuntu-22.04 2.4	1m 10s
ubuntu-22.04 2.5	1m 7s
ubuntu-22.04 2.6	1m 18s
ubuntu-22.04 2.7	1m 15s
ubuntu-22.04 3.0	36s
ubuntu-22.04 3.1	33s
ubuntu-22.04 3.2	27s
ubuntu-22.04 head	52s
ubuntu-22.04 jruby	1m 22s
ubuntu-22.04 jruby-head	1m 37s
ubuntu-22.04 truffleruby	59s
ubuntu-22.04 truffleruby-head	1m 16s
macos-11 2.3	2m 24s
macos-11 2.4	1m 57s
macos-11 2.5	2m 15s
macos-11 2.6	2m 17s
macos-11 2.7	2m 7s
macos-11 3.0	37s
macos-11 3.1	41s
macos-11 3.2	45s
macos-11 head	40s
macos-11 jruby	1m 23s
macos-11 jruby-head	1m 19s
macos-11 truffleruby	1m 29s
macos-11 truffleruby-head	1m 45s
macos-12 2.3	2m 12s
macos-12 2.4	2m 10s
macos-12 2.5	2m 50s
macos-12 2.6	2m 23s
macos-12 2.7	2m 4s
macos-12 3.0	36s
macos-12 3.1	36s
macos-12 3.2	45s
macos-12 head	45s
macos-12 jruby	1m 26s
macos-12 jruby-head	1m 26s
macos-12 truffleruby	1m 46s
macos-12 truffleruby-head	2m 26s
windows-latest 2.3	3m 13s
windows-latest 2.4	3m 16s
windows-latest 2.5	3m 11s
windows-latest 2.6	3m 14s
windows-latest 2.7	3m 9s
windows-latest 3.0	1m 54s
windows-latest 3.1	1m 52s
windows-latest 3.2	3m 1s
windows-latest head	2m 26s
ubuntu-latest jruby-9.1	2m 23s
ubuntu-latest jruby-9.2	1m 47s
ubuntu-latest jruby-9.3	1m 35s
	1h 41m 57s

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