add: `linux-headers-lts-6.6-deb` #8983

Job	Run time
test-on-ubuntu (ubuntu:latest, master)	1m 35s
test-on-debian (debian:stable, master)	1m 17s
test-on-ubuntu (ubuntu:latest, develop)	1m 40s
test-on-debian (debian:stable, develop)	1m 19s
test-on-ubuntu (ubuntu:devel, master)	1m 33s
test-on-debian (debian:testing, master)	1m 35s
test-on-ubuntu (ubuntu:devel, develop)	1m 33s
test-on-debian (debian:testing, develop)	35s
test-on-ubuntu (ubuntu:rolling, master)	1m 14s
test-on-debian (debian:unstable, master)	1m 28s
test-on-ubuntu (ubuntu:rolling, develop)	1m 29s
test-on-debian (debian:unstable, develop)	1m 35s
	16m 53s

Provide feedback