chore: 7.2 alpha release notes (#14503) #29766

Job	Run time
opentrons app frontend unit tests	11m 45s
opentrons app backend unit tests on windows-2022	7m 46s
Determine build variant and type	1s
opentrons app backend unit tests on ubuntu-22.04	3m 9s
opentrons app backend unit tests on macos-11	7m 37s
Build release desktop app on windows-2022	15m 34s
Build release desktop app on ubuntu-22.04	5m 46s
Build release odd app on ubuntu-22.04	4m 49s
Build release desktop app on macos-11	43m 32s
Deploy built app artifacts to S3	3m 35s
	1h 43m 34s

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