included venv activation for python scripts #306

Job	Run time
bookworm armv7 / build	3m 42s
bullseye armv7 / build	3m 54s
bookworm armv7 / test (run_install_common.sh)	7m 18s
bookworm armv7 / test (run_install_faststartup.sh)	7m 19s
bookworm armv7 / test (run_install_webapp_local.sh)	7m 21s
bookworm armv7 / test (run_install_webapp_download.sh)	7m 24s
bookworm armv7 / test (run_install_libzmq_local.sh)	7m 20s
bullseye armv7 / test (run_install_common.sh)	7m 7s
bullseye armv7 / test (run_install_faststartup.sh)	7m 8s
bullseye armv7 / test (run_install_webapp_local.sh)	7m 7s
bullseye armv7 / test (run_install_webapp_download.sh)	7m 6s
bullseye armv7 / test (run_install_libzmq_local.sh)	6m 1s
bullseye armv7 / cleanup	2s
bookworm armv7 / cleanup	8s
	1h 18m 57s

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