Merge pull request #417 from SpiNNakerManchester/ConnectionError #1465

Job	Run time
call / validate (ubuntu-latest, 3.12, validate)	3m 32s
call / tests (windows-latest, 3.12, tests)	2m 34s
call / checks (ubuntu-latest, 3.13)	3s
call / tests (windows-2019, 3.8, tests)	2m 18s
call / checks (ubuntu-24.04, 3.11)	2m 25s
call / tests (macos-latest, 3.12, tests)	1m 5s
call / checks (ubuntu-latest, 3.10)	2m 25s
call / tests (macos-12, 3.8, tests)	1m 57s
call / checks (ubuntu-22.04, 3.9)	2m 50s
call / checks (ubuntu-20.04, 3.8)	2m 41s
	21m 50s

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