Fix use of deprecated Boost Asio API #1020

Job	Run time
Formatting Check	1m 39s
Run unit tests	22m 3s
Lint	27m 16s
Build the Wireshark dissector (ubuntu-latest)	43s
Build CPP Client on Windows x86	28m 43s
Build CPP Client on Windows x64	34m 41s
Build CPP Client on macOS with static dependencies	15m 39s
Build with the C++20 standard	5m 35s
Build Deb x86_64	11m 51s
Build Alpine x86_64	17m 20s
Build RPM x86_64	12m 27s
Check Completion	4s
	2h 58m 1s

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