build

Drop support for old ERB #201

Job	Run time
ruby-versions / Generate Ruby versions	1s
build (2.6 / ubuntu-latest)	29s
build (2.6 / macos-latest)	1m 3s
build (2.7 / ubuntu-latest)	21s
build (2.7 / macos-latest)	58s
build (3.0 / ubuntu-latest)	11s
build (3.0 / macos-latest)	22s
build (3.1 / ubuntu-latest)	14s
build (3.1 / macos-latest)	19s
build (3.2 / ubuntu-latest)	13s
build (3.2 / macos-latest)	22s
build (3.3 / ubuntu-latest)	15s
build (3.3 / macos-latest)	26s
build (head / ubuntu-latest)	11s
build (head / macos-latest)	30s
build (truffleruby / ubuntu-latest)	31s
build (truffleruby / macos-latest)	1m 10s
build (truffleruby-head / ubuntu-latest)	30s
build (truffleruby-head / macos-latest)	45s
	8m 51s

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