chore: prepare for release v1.4.0-alpha.4 #115

Job	Run time
Set Version from git ref	1s
Binaries	6m 26s
Demo Docker Images (bookbuyer)	2m 17s
Docker Images (curl)	1m 51s
Demo Docker Images (bookthief)	2m 25s
Docker Images (sidecar-init)	1m 36s
Demo Docker Images (bookstore)	2m 25s
Docker Images (controller)	4m 59s
Demo Docker Images (bookwarehouse)	2m 10s
Docker Images (injector)	4m 11s
Demo Docker Images (tcp-echo-server)	1m 47s
Docker Images (connector)	4m 47s
Docker Images (crds)	2m 1s
Demo Docker Images (tcp-client)	1m 31s
Docker Images (bootstrap)	4m 19s
Docker Images (preinstall)	3m 6s
Docker Images (healthcheck)	3m 5s
Docker Images (interceptor)	4m 22s
Docker Images (ingress)	4m 28s
Docker Images (gateway)	4m 29s
	1h 2m 16s

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