submodule: bump third_party/openthread/repo from `151444f` to `1024a1f` #5409

Job	Run time
Border Router (mDNSResponder)	29m 8s
Border Router (Avahi)	29m 24s
Border Router TREL (mDNSResponder)	28m 56s
Border Router TREL (Avahi)	29m 12s
Border Router MATN (mDNSResponder)	18m 16s
Border Router Internet Access Features (mDNSResponder)	25m 45s
Backbone Router	17m 59s
Border Router TREL with FEATURE_FLAG (avahi)	29m 26s
	3h 28m 6s

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