WIP: Upgrade codecov-action (v3->v4) to use Node20 #208

Job	Run time
build (fedora:latest, true)	1m 9s
build (quay.io/centos/centos:stream8, true)	1m 16s
build (quay.io/centos/centos:stream9, true)	1m 12s
build (debian:testing, true)	1m 21s
build (debian:latest, true)	1m 17s
build (ubuntu:latest, true)	24s
build (ubuntu:rolling, true)	1s
build (ubuntu:lunar, true)	9s
build (ubuntu:jammy, true)	1m 17s
build (ubuntu:focal, true)	1m 17s
build (quay.io/fedora/fedora:rawhide, false)	44s
build (ubuntu:devel, false)	24s
	10m 31s

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