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Bump third_party/libwebsockets/repo from `c57c239` to `2d08ea5` #1929

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Job	Run time
Chef - NRFConnect CI Examples	11m 38s
Chef - Linux CI Examples	5m 39s
Chef - ESP32 CI Examples	12m 1s
Chef - Telink CI Examples	12m 4s
	41m 22s