update gem #4

Job	Run time
Build (github-pages gem)	29s
Validate HTML (3.2)	13s
Test CSS and JS (18.x)	8s
Build (jekyll gem) (3.9, ubuntu-latest, 3.0)	24s
Build (jekyll gem) (3.9, ubuntu-latest, 3.1)	24s
Build (jekyll gem) (3.9, ubuntu-latest, 3.2)	21s
Build (jekyll gem) (3.9, macos-latest, 3.0)	37s
Build (jekyll gem) (3.9, macos-latest, 3.1)	37s
Build (jekyll gem) (3.9, macos-latest, 3.2)	1m 1s
Build (jekyll gem) (3.9, windows-latest, 3.0)	1m 19s
Build (jekyll gem) (3.9, windows-latest, 3.1)	2m 36s
Build (jekyll gem) (3.9, windows-latest, 3.2)	3m 23s
Build (jekyll gem) (4.3, ubuntu-latest, 3.0)	19s
Build (jekyll gem) (4.3, ubuntu-latest, 3.1)	22s
Build (jekyll gem) (4.3, ubuntu-latest, 3.2)	25s
Build (jekyll gem) (4.3, macos-latest, 3.0)	39s
Build (jekyll gem) (4.3, macos-latest, 3.1)	57s
Build (jekyll gem) (4.3, macos-latest, 3.2)	56s
Build (jekyll gem) (4.3, windows-latest, 3.0)	1m 19s
Build (jekyll gem) (4.3, windows-latest, 3.1)	2m 25s
Build (jekyll gem) (4.3, windows-latest, 3.2)	3m 31s
	22m 25s

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