docs: Update docs to make `develop` the default branch #5021

Job	Run time
Cancel running workflows	2s
Setup Docker tags	10s
Setup version properties	10s
Build debian package	20m 22s
(DockerHub) Docker ARM	0s
(DockerHub) Docker AMD	0s
(PRIVATE) Docker ARM	0s
(PRIVATE) Docker AMD / build-and-push	29m 59s
Snyk monitor container	0s
Join Multiarch Image Private Dockerhub	0s
Snyk monitor	0s
Join Multiarch Image Private Dockerhub	0s
	50m 43s

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