Test

CC-1222: update cpp version, and add vcpkg support for dependency resolution #266

Job	Run time
test_course_definition / go_lint	4s
test_course_definition / docker_lint	8s
test_course_definition / identify_language_slugs	5s
test_course_definition / js_lint	27s
test_course_definition / lint	59s
test_course_definition / markdown_lint	27s
test_course_definition / rust_lint	5s
test_course_definition / verify_templates_compiled	22s
test_course_definition / validate-schemas	19s
test_course_definition / validate-stages-naming	5s
test_course_definition / test (cpp)	1m 2s
test_course_definition / test (csharp)	1m 6s
test_course_definition / test (gleam)	42s
test_course_definition / test (go)	45s
test_course_definition / test (haskell)	1m 53s
test_course_definition / test (javascript)	25s
test_course_definition / test (python)	35s
test_course_definition / test (ruby)	30s
test_course_definition / test (rust)	48s
test_course_definition / test (typescript)	51s
	11m 38s

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