included venv activation for python scripts #308

Job	Run time
bookworm armv7 / build	2m 58s
bullseye armv7 / build	4m 8s
bookworm armv7 / test (run_install_common.sh)	13m 39s
bookworm armv7 / test (run_install_faststartup.sh)	10m 33s
bookworm armv7 / test (run_install_webapp_local.sh)	21m 3s
bookworm armv7 / test (run_install_webapp_download.sh)	13m 55s
bookworm armv7 / test (run_install_libzmq_local.sh)	25m 5s
bullseye armv7 / test (run_install_common.sh)	13m 24s
bullseye armv7 / test (run_install_faststartup.sh)	10m 23s
bullseye armv7 / test (run_install_webapp_local.sh)	21m 41s
bullseye armv7 / test (run_install_webapp_download.sh)	14m 42s
bullseye armv7 / test (run_install_libzmq_local.sh)	24m 23s
bookworm armv7 / cleanup	2s
bullseye armv7 / cleanup	3s
	2h 55m 59s

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