[YouTube] Fix nsig challenge for player `3bb1f723` #3075

Job	Run time
Linter	16s
Select tests from inputs	1s
Run tests (ubuntu-20.04, 2.7, cpython, core, sh)	1m 15s
Run tests (ubuntu-20.04, 3.2, cpython, core, sh)	5m 19s
Run tests (ubuntu-20.04, 3.5, cpython, core, sh)	1m 6s
Run tests (ubuntu-20.04, 3.9, cpython, core, sh)	1m 10s
Run tests (ubuntu-20.04, 3.11, cpython, core, sh)	1m 4s
Run tests (ubuntu-20.04, pypy-2.7, cpython, core, sh)	2m 14s
Run tests (ubuntu-20.04, pypy-3.6, cpython, core, sh)	2m 33s
Run tests (ubuntu-20.04, pypy-3.7, cpython, core, sh)	2m 42s
Run tests (windows-2019, 3.4, cpython, core, bat)	2m 4s
Run tests (windows-2019, 3.4, cpython, nodownload, bat)	58s
Run tests (ubuntu-20.04, 2.7, jython, core, sh)	3m 24s
Run tests (ubuntu-20.04, 2.7, jython, nodownload, sh)	2m 54s
	27m 0s

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