Make it possible to override RUBY_TARGET (#512) #1880

Job	Run time
📥 Fetch CI data	1s
🔘 Static (3.2.2, ubuntu-latest, stable)	2m 10s
🧪 Test (2.7, ubuntu-latest, 1.65)	5m 45s
🧪 Test (2.7, ubuntu-latest, stable)	2m 57s
🧪 Test (2.7, macos-latest, stable)	2m 47s
🧪 Test (2.7, windows-2022, stable)	9m 0s
🧪 Test (3.0, ubuntu-latest, 1.65)	5m 13s
🧪 Test (3.0, ubuntu-latest, stable)	2m 41s
🧪 Test (3.0, macos-latest, stable)	2m 58s
🧪 Test (3.0, windows-2022, stable)	6m 36s
🧪 Test (3.1, ubuntu-latest, 1.65)	5m 22s
🧪 Test (3.1, ubuntu-latest, stable)	2m 41s
🧪 Test (3.1, windows-2022, stable)	7m 6s
🧪 Test (3.2, ubuntu-latest, 1.65)	5m 14s
🧪 Test (3.2, ubuntu-latest, stable)	2m 40s
🧪 Test (3.2, macos-latest, stable)	2m 3s
🧪 Test (3.2, windows-2022, stable)	7m 24s
🧪 Test (3.3, ubuntu-latest, 1.65)	6m 5s
🧪 Test (3.3, ubuntu-latest, stable)	2m 51s
🧪 Test (3.3, macos-latest, stable)	2m 51s
🧪 Test (3.3, windows-2022, stable)	7m 0s
🧪 Test (3.4, ubuntu-latest, 1.65)	5m 9s
🧪 Test (3.4, ubuntu-latest, stable)	2m 40s
🧪 Test (3.4, macos-latest, stable)	2m 21s
🧪 Test (truffleruby, ubuntu-latest, stable)	2m 39s
🧪 Test (truffleruby, macos-latest, stable)	3m 12s
🧪 Test (mswin, windows-2022, stable-x86_64-pc-windows-msvc)	8m 24s
	1h 55m 50s

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