Bump yaml from 2.3.4 to 2.6.1 #14

Job	Run time
Test with default inputs (4.11.1, ubuntu-latest)	18s
Test with default inputs (4.11.1, macos-latest)	14s
Test with default inputs (4.11.1, windows-latest)	49s
Test with dest (4.11.1, ubuntu-latest)	18s
Test with dest (4.11.1, macos-latest)	13s
Test with dest (4.11.1, windows-latest)	1m 26s
Test with standalone (ubuntu-latest, true)	20s
Test with run_install (null, ubuntu-latest)	18s
Test with standalone (ubuntu-latest, false)	1m 24s
Test with run_install (empty object, ubuntu-latest)	21s
Test with standalone (macos-latest, true)	13s
Test with run_install (recursive, ubuntu-latest)	20s
Test with standalone (macos-latest, false)	1m 21s
Test with run_install (global, ubuntu-latest)	24s
Test with standalone (windows-latest, true)	33s
Test with run_install (array, ubuntu-latest)	29s
Test with standalone (windows-latest, false)	1m 53s
Test with run_install (null, macos-latest)	14s
Test with run_install (empty object, macos-latest)	14s
Test with run_install (recursive, macos-latest)	51s
Test with run_install (global, macos-latest)	21s
Test with run_install (array, macos-latest)	34s
Test with run_install (null, windows-latest)	43s
Test with run_install (empty object, windows-latest)	1m 7s
Test with run_install (recursive, windows-latest)	1m 30s
Test with run_install (global, windows-latest)	1m 22s
Test with run_install (array, windows-latest)	1m 41s
	19m 31s

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