[main] Copy `v20.0.4` release notes (#17322) #467

Job	Run time
Build and push vttestserver (mysql80)	2m 29s
Build and push lite (latest)	4m 46s
Build and push lite (percona80)	4m 39s
Build and push (bullseye, vtadmin)	1m 17s
Build and push (bullseye, vtorc)	42s
Build and push (bullseye, vtgate)	48s
Build and push (bullseye, vttablet)	44s
Build and push (bullseye, mysqlctld)	41s
Build and push (bullseye, mysqlctl)	35s
Build and push (bullseye, vtctl)	42s
Build and push (bullseye, vtctlclient)	38s
Build and push (bullseye, vtctld)	1m 35s
Build and push (bullseye, vtctldclient)	39s
Build and push (bullseye, logrotate)	23s
Build and push (bullseye, logtail)	26s
Build and push (bullseye, vtbackup)	49s
Build and push (bullseye, vtexplain)	47s
Build and push (bookworm, vtadmin)	1m 14s
Build and push (bookworm, vtorc)	47s
Build and push (bookworm, vtgate)	37s
Build and push (bookworm, vttablet)	46s
Build and push (bookworm, mysqlctld)	42s
Build and push (bookworm, mysqlctl)	39s
Build and push (bookworm, vtctl)	38s
Build and push (bookworm, vtctlclient)	43s
Build and push (bookworm, vtctld)	1m 27s
Build and push (bookworm, vtctldclient)	35s
Build and push (bookworm, logrotate)	22s
Build and push (bookworm, logtail)	28s
Build and push (bookworm, vtbackup)	46s
Build and push (bookworm, vtexplain)	36s
Slack Notification if failed	0s
	33m 0s

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