Add error handling in case release branch doesn't exist yet (#7094) #17134

Job	Run time
Build linux_arm binaries	2m 59s
Build linux_arm64 binaries	1m 12s
Build and publish container images	5m 34s
Build linux_amd64 binaries	10m 3s
Build windows_amd64 binaries	2m 53s
Build darwin_amd64 binaries	3m 1s
Build darwin_arm64 binaries	3m 23s
Helm chart build	25s
Delete artifacts	2s
Publish GitHub Release	0s
	29m 32s

Provide feedback