Bump third_party/openthread/repo from `0b269e1` to `f0530af` #64155

Job	Run time
REPL Tests - Linux	35m 52s
Test Suites - Darwin (no-ble-asan-clang)	1h 35m 35s
Test Suites - Linux (no-ble-tsan-clang)	1h 42m 47s
Test Suites - Darwin (no-ble-tsan-clang)	2h 5m 21s
REPL Tests - Darwin	0s
	5h 59m 35s

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