enable testing for debian 11 #938

Job	Run time
pack_deb	1m 22s
pack_rpm (fedora, 34)	1m 7s
pack_pip	19s
pack_rpm (fedora, 35)	1m 8s
pack_rpm (fedora, 36)	1m 13s
run_tests_pip_package_linux	2m 51s
run_tests_pip_package_windows	3m 6s
run_tests_rpm (fedora, 34)	2m 15s
run_tests_rpm (fedora, 35)	2m 15s
run_tests_rpm (fedora, 36)	2m 14s
run_tests_deb (debian, bullseye)	56s
run_tests_deb (ubuntu, focal)	2m 6s
run_tests_deb (ubuntu, jammy)	2m 5s
publish_pip	1s
publish_rpm	1s
publish_deb	1s
	23m 0s

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