test: remove existing apt libzmq #461

Job	Run time
bookworm armv7 / build	13m 25s
bullseye armv7 / build	12m 41s
bullseye armv7 / test (run_install_common.sh)	5m 43s
bullseye armv7 / test (run_install_faststartup.sh)	6m 44s
bullseye armv7 / test (run_install_webapp_local.sh)	6m 15s
bullseye armv7 / test (run_install_webapp_download.sh)	5m 42s
bullseye armv7 / test (run_install_libzmq_local.sh)	19m 19s
bookworm armv7 / test (run_install_common.sh)	7m 21s
bookworm armv7 / test (run_install_faststartup.sh)	7m 18s
bookworm armv7 / test (run_install_webapp_local.sh)	8m 33s
bookworm armv7 / test (run_install_webapp_download.sh)	7m 34s
bookworm armv7 / test (run_install_libzmq_local.sh)	23m 8s
bullseye armv7 / cleanup	0s
bookworm armv7 / cleanup	0s
	2h 3m 43s

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