chore(deps): update external/libzmq digest to 0ed7a08 #40

Job	Run time
lib_android (monero)	25m 27s
ios build (monero)	16m 8s
lib_darwin (monero)	13m 28s
lib_linux (monero)	15m 53s
ios build (wownero)	12m 5s
lib_android (wownero)	24m 30s
lib_darwin (wownero)	13m 53s
lib_linux (wownero)	2m 34s
macos build (monero)	4m 21s
lib_mingw (monero)	12m 25s
macos build (wownero)	3m 44s
lib_sailfishos_aarch64 (monero)	9m 53s
lib_sailfishos_i486 (monero)	6m 59s
lib_sailfishos_aarch64 (wownero)	3m 32s
lib_mingw (wownero)	3m 49s
lib_sailfishos_i486 (wownero)	2m 5s
wallet_xmruw_android (monero)	6m 39s
wallet_xmruw_android (wownero)	7m 5s
wallet_cake_android	20m 56s
comment on pr	6s
	3h 25m 32s

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