add /usr/lib/python3.11 to pythonpath #1028

Job	Run time
pack_deb	3m 11s
pack_pip	11s
pack_rpm (fedora, 34)	1m 1s
pack_rpm (fedora, 35)	1m 4s
pack_rpm (fedora, 36)	1m 3s
run_tests_pip_package_windows	7m 26s
run_tests_pip_package_linux	2m 40s
run_tests_rpm (fedora, 34)	4m 54s
run_tests_rpm (fedora, 35)	4m 42s
run_tests_rpm (fedora, 36)	5m 23s
run_tests_deb (debian, bookworm)	1m 48s
run_tests_deb (ubuntu, focal)	3m 12s
run_tests_deb (ubuntu, jammy)	3m 38s
run_tests_deb (ubuntu, noble)	1m 29s
publish_rpm	0s
publish_deb	0s
publish_pip	1s
	41m 43s

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