installation: untar libzmq in venv folder instead of /usr/local #372

Job	Run time
bookworm armv7 / build	1m 21s
bullseye armv7 / build	1m 20s
bullseye armv7 / test (run_install_common.sh)	13m 25s
bullseye armv7 / test (run_install_faststartup.sh)	9m 50s
bullseye armv7 / test (run_install_webapp_local.sh)	21m 35s
bullseye armv7 / test (run_install_webapp_download.sh)	14m 13s
bullseye armv7 / test (run_install_libzmq_local.sh)	23m 44s
bookworm armv7 / test (run_install_common.sh)	14m 21s
bookworm armv7 / test (run_install_faststartup.sh)	10m 8s
bookworm armv7 / test (run_install_webapp_local.sh)	21m 27s
bookworm armv7 / test (run_install_webapp_download.sh)	14m 42s
bookworm armv7 / test (run_install_libzmq_local.sh)	24m 45s
bullseye armv7 / cleanup	2s
bookworm armv7 / cleanup	2s
	2h 50m 55s

Provide feedback