Test

feat: update ruby version to 3.3 #225

Job	Run time
test_course_definition / js_lint	28s
test_course_definition / markdown_lint	28s
test_course_definition / rust_lint	8s
test_course_definition / go_lint	5s
test_course_definition / verify_templates_compiled	28s
test_course_definition / docker_lint	7s
test_course_definition / identify_language_slugs	3s
test_course_definition / validate-schemas	21s
test_course_definition / validate-stages-naming	5s
test_course_definition / test (cpp)	48s
test_course_definition / test (csharp)	1m 5s
test_course_definition / test (go)	49s
test_course_definition / test (haskell)	1m 50s
test_course_definition / test (javascript)	23s
test_course_definition / test (python)	34s
test_course_definition / test (ruby)	27s
test_course_definition / test (rust)	46s
	8m 55s

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