Remove unowned Network pointer from NetworkMessage #107

Job	Run time
check-format	7s
extras	41s
pio-build (vest_dev)	1m 8s
pio-merge (vest)	1m 23s
pio-build (vest_instrumentation)	2m 7s
pio-native-test	17s
pio-build (clouds_s3_debug)	1m 51s
pio-merge (vest_s3)	2m 25s
pio-build (gauntlet)	1m 32s
pio-merge (shoe)	1m 19s
pio-build (vest_idf5)	1m 34s
pio-merge (hat)	1m 15s
pio-build (vest_idf5_espidf)	2m 5s
pages	0s
	17m 44s

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