included venv activation for python scripts #311

Job	Run time
bookworm armv7 / build	3m 20s
bullseye armv7 / build	3m 8s
bullseye armv7 / test (run_install_common.sh)	13m 35s
bullseye armv7 / test (run_install_faststartup.sh)	10m 11s
bullseye armv7 / test (run_install_webapp_local.sh)	21m 56s
bullseye armv7 / test (run_install_webapp_download.sh)	14m 16s
bullseye armv7 / test (run_install_libzmq_local.sh)	23m 54s
bookworm armv7 / test (run_install_common.sh)	14m 19s
bookworm armv7 / test (run_install_faststartup.sh)	10m 13s
bookworm armv7 / test (run_install_webapp_local.sh)	21m 14s
bookworm armv7 / test (run_install_webapp_download.sh)	13m 24s
bookworm armv7 / test (run_install_libzmq_local.sh)	25m 42s
bullseye armv7 / cleanup	2s
bookworm armv7 / cleanup	2s
	2h 55m 16s

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