Update dependency bazel_skylib to v1.6.1 #769

Job	Run time
lint	21s
test (macos-latest, 7.0.0, true)	1s
abs_paths_test (true)	2m 9s
abs_paths_test (false)	2m 11s
test (macos-latest, 7.0.0, false)	1m 56s
container_test (archlinux, true)	2m 33s
test (macos-latest, latest, true)	1s
external_test (macos-13, latest, true)	4m 15s
container_test (archlinux, false)	2m 24s
external_test (macos-13, latest, false)	4m 35s
test (macos-latest, latest, false)	1s
container_test (debian, true)	2m 33s
external_test (ubuntu-latest, latest, true)	4m 52s
container_test (debian, false)	2m 32s
test (ubuntu-latest, 7.0.0, true)	2m 18s
external_test (ubuntu-latest, latest, false)	4m 47s
container_test (fedora, true)	2m 27s
test (ubuntu-latest, 7.0.0, false)	2m 20s
container_test (fedora, false)	2m 57s
test (ubuntu-latest, latest, true)	2m 9s
container_test (suse_leap, true)	1m 15s
test (ubuntu-latest, latest, false)	2m 12s
sys_paths_test (true)	3m 29s
xcompile_test (true)	1s
container_test (suse_leap, false)	1m 26s
sys_paths_test (false)	3m 21s
xcompile_test (false)	1s
container_test (suse_tumbleweed, true)	56s
container_test (suse_tumbleweed, false)	1m 2s
container_test (ubuntu_20_04, true)	45s
container_test (ubuntu_20_04, false)	45s
container_test (ubuntu_22_04, true)	1s
container_test (ubuntu_22_04, false)	34s
container_test (linux_sysroot, true)	1m 25s
container_test (linux_sysroot, false)	2m 26s
	1h 7m 1s

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