Update go version and re-vendor #172

Job	Run time
pre-check	3m 29s
build-delta-manifests	4m 2s
build-multiple-delta-packs	3m 54s
build-all-delta-packs	3m 51s
bundle-commands	3m 13s
clean-rebuild	3m 30s
clr-installer-config	3m 10s
config-conversion	3m 19s
content-chroot	3m 41s
contentsize-check	3m 31s
create-mix-with-blended-content	5m 58s
create-mix-with-custom-content	4m 0s
customize-os-release	5m 25s
update-mix-add-remove-bundles	11m 46s
export-flag	3m 59s
manual-upstream-format-bump-flow	3m 39s
manual-format-bump-flow	3m 46s
no-delta-manifests-over-format-bump	3m 46s
no-delta-packs-over-format-bump	3m 42s
no-state-variables-in-full	4m 0s
state-conversion	4m 4s
test-format-bump	4m 24s
update-mixver-offline	3m 21s
upstream-format-bump	3m 29s
	1h 40m 59s

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