Build

submodule: bump openthread from `6f12c81` to `aebecca` #1933

Job	Run time
Docker / metadata / Generate required metadata	1s
Docker / Build	3m 1s
Docker / Tag `latest` and publish to DockerHub	0s
Arm GNU Toolchain 12.2.Rel1	18m 31s
Arm GNU Toolchain 12.3.Rel1	17m 59s
	39m 32s

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