submodule: bump third_party/openthread/repo from `151444f` to `1024a1… #5410

Job	Run time
Border Router (mDNSResponder)	29m 55s
Border Router (Avahi)	29m 21s
Border Router TREL (mDNSResponder)	29m 42s
Border Router TREL (Avahi)	29m 45s
Border Router MATN (mDNSResponder)	18m 12s
Border Router Internet Access Features (mDNSResponder)	26m 23s
Backbone Router	17m 24s
Border Router TREL with FEATURE_FLAG (avahi)	29m 1s
	3h 29m 43s

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