Bump js-yaml and coveralls-next #1526

Job	Run time
lint	1m 0s
typescript_test	1m 34s
browser_tests (chrome)	47s
unit_tests (18)	1m 37s
browser_tests (safari)	54s
unit_tests (24)	1m 27s
fullstack_production_suite / test	4s
lint_markdown_files / lint	1m 7s
unit_tests (22)	1m 33s
browser_tests (edge)	48s
unit_tests (20)	1m 45s
integration_tests / test	3s
browser_tests (firefox)	46s
Coveralls coverage	9s
	13m 34s

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