additionally update PYTHONPATH #1016

Job	Run time
pack_pip	14s
pack_deb	2m 25s
pack_rpm (fedora, 34)	1m 6s
pack_rpm (fedora, 35)	1m 4s
pack_rpm (fedora, 36)	1m 6s
run_tests_pip_package_windows	6m 8s
run_tests_pip_package_linux	2m 31s
run_tests_rpm (fedora, 34)	5m 13s
run_tests_rpm (fedora, 35)	4m 41s
run_tests_rpm (fedora, 36)	4m 47s
run_tests_deb (debian, bookworm)	1m 26s
run_tests_deb (ubuntu, focal)	3m 4s
run_tests_deb (ubuntu, jammy)	3m 14s
run_tests_deb (ubuntu, noble)	1m 56s
publish_deb	0s
publish_rpm	1s
publish_pip	1s
	38m 57s

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