Fixups for CentOS 7 which is now EOL #458

Job	Run time
DEB build (ubuntu-20.04, ubuntu:20.04)	2m 36s
DEB build (ubuntu-22.04, ubuntu:22.04)	2m 51s
DEB build (debian-10, debian:buster)	2m 26s
DEB build (debian-11, debian:bullseye)	2m 16s
DEB build (debian-12, debian:bookworm)	3m 6s
DEB build (debian-sid, debian:sid)	2m 53s
DEB install test (ubuntu-20.04, ubuntu:20.04)	30s
DEB install test (ubuntu-22.04, ubuntu:22.04)	29s
DEB install test (debian-10, debian:buster)	28s
DEB install test (debian-11, debian:bullseye)	29s
DEB install test (debian-12, debian:bookworm)	1m 30s
DEB install test (debian-sid, debian:sid)	1m 5s
	20m 39s

Provide feedback