Add permissions for CI test github action #176

Job	Run time
pre-check	4m 23s
build-multiple-delta-packs	4m 56s
build-all-delta-packs	4m 3s
build-delta-manifests	4m 49s
config-conversion	3m 24s
clean-rebuild	4m 59s
content-chroot	4m 44s
contentsize-check	3m 25s
create-mix-with-blended-content	7m 10s
bundle-commands	3m 51s
clr-installer-config	4m 1s
create-mix-with-custom-content	5m 7s
customize-os-release	5m 14s
export-flag	4m 20s
manual-format-bump-flow	4m 43s
manual-upstream-format-bump-flow	3m 42s
no-delta-manifests-over-format-bump	3m 47s
no-delta-packs-over-format-bump	4m 23s
no-state-variables-in-full	3m 28s
state-conversion	4m 43s
test-format-bump	5m 18s
update-mix-add-remove-bundles	12m 36s
update-mixver-offline	3m 47s
upstream-format-bump	4m 17s
	1h 55m 10s

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