Cleaner .encode / .force_encoding #69

Job	Run time
ruby-versions / Generate Ruby versions	2s
ubuntu-22.04 2.7	1m 6s
ubuntu-22.04 3.0	30s
ubuntu-22.04 3.1	33s
ubuntu-22.04 3.2	27s
ubuntu-22.04 3.3	30s
ubuntu-22.04 head	33s
ubuntu-22.04 jruby	1m 9s
ubuntu-22.04 jruby-head	1m 7s
macos-13 2.7	2m 15s
macos-13 3.0	33s
macos-13 3.1	34s
macos-13 3.2	30s
macos-13 3.3	54s
macos-13 head	31s
macos-13 jruby	2m 38s
macos-13 jruby-head	1m 45s
macos-14 2.7	1m 23s
macos-14 3.0	21s
macos-14 3.1	25s
macos-14 3.2	26s
macos-14 3.3	40s
macos-14 head	21s
macos-14 jruby	1m 22s
macos-14 jruby-head	45s
windows-latest 2.7	5m 40s
windows-latest 3.0	2m 38s
windows-latest 3.1	2m 54s
windows-latest 3.2	1m 59s
windows-latest 3.3	3m 30s
windows-latest head	1m 37s
windows-latest mswin	2m 15s
ubuntu-latest jruby-9.4	1m 14s
macos-latest truffleruby-head	59s
ubuntu-latest truffleruby-head	1m 3s
	45m 9s

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