Bump demo versions to 4.5.5 #2332

Job	Run time
create-dev-cluster	9m 15s
create-dev-cluster	9m 15s
build-and-push / build-and-push-certifier	1m 39s
build-and-push / build-and-push-certifier	1m 39s
build-and-push / build-and-push-server	5m 4s
build-and-push / build-and-push-server	5m 4s
lint / golint	2m 24s
lint / golint	2m 24s
lint / actionlint	5s
lint / actionlint	5s
lint / shellcheck	1m 0s
lint / shellcheck	1m 0s
unit-tests / unit-test	2m 46s
unit-tests / unit-test	2m 46s
comment-on-PR	1m 0s
comment-on-PR	1m 0s
deploy-and-test	15m 19s
deploy-and-test	12m 10s
	1h 13m 55s

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