[main] Copy `v18.0.8` release notes (#17155) #404

Job	Run time
Build and push lite (latest)	4m 15s
Build and push vttestserver (mysql80)	2m 29s
Build and push lite (percona80)	4m 22s
Build and push (bullseye, vtadmin)	1m 34s
Build and push (bullseye, vtorc)	42s
Build and push (bullseye, vtgate)	48s
Build and push (bullseye, vttablet)	52s
Build and push (bullseye, mysqlctld)	50s
Build and push (bullseye, mysqlctl)	35s
Build and push (bullseye, vtctl)	51s
Build and push (bullseye, vtctlclient)	33s
Build and push (bullseye, vtctld)	1m 26s
Build and push (bullseye, vtctldclient)	42s
Build and push (bullseye, logrotate)	26s
Build and push (bullseye, logtail)	30s
Build and push (bullseye, vtbackup)	43s
Build and push (bullseye, vtexplain)	50s
Build and push (bookworm, vtadmin)	1m 11s
Build and push (bookworm, vtorc)	36s
Build and push (bookworm, vtgate)	39s
Build and push (bookworm, vttablet)	39s
Build and push (bookworm, mysqlctld)	47s
Build and push (bookworm, mysqlctl)	57s
Build and push (bookworm, vtctl)	57s
Build and push (bookworm, vtctlclient)	53s
Build and push (bookworm, vtctld)	1m 33s
Build and push (bookworm, vtctldclient)	35s
Build and push (bookworm, logrotate)	25s
Build and push (bookworm, logtail)	33s
Build and push (bookworm, vtbackup)	52s
Build and push (bookworm, vtexplain)	35s
Slack Notification if failed	0s
	33m 40s

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