ci: install `libselinux1-dev` #5793

Job	Run time
Style/format (ubuntu-latest, feat_os_unix)	21s
Style/spelling (ubuntu-latest, feat_os_unix)	1m 25s
Style/lint (ubuntu-latest, feat_os_unix)	1m 16s
Style/lint (macos-latest, feat_os_macos)	1m 42s
Style/toml	9s
Style/lint (windows-latest, feat_os_windows)	2m 37s
	7m 30s

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