feat: Use rocq/rocq-prover namespace if need be #699

Job	Run time
custom_image / docker-mathcomp / opam (mathcomp/mathcomp-dev:coq-dev)	13m 51s
coq_version / docker-coq / opam (8.18, default)	2m 25s
custom_image / docker-mathcomp / opam (mathcomp/mathcomp:latest-coq-8.19)	3m 45s
custom_image / docker-coq / make / script (coqorg/coq:latest)	4m 41s
coq_version / docker-coq / opam (latest-native, default)	2m 36s
custom_image / docker-coq / make / script (rocq/rocq-prover:dev)	3m 9s
coq_version / docker-coq / opam (dev, default)	2m 30s
custom_image / docker-coq / make / custom_script (coqorg/coq:latest)	5m 5s
custom_image / docker-coq / opam / env (coqorg/coq:latest)	6m 8s
custom_image / docker-coq / make / custom_script (rocq/rocq-prover:dev)	6m 8s
custom_image / docker-coq / opam / auto install depexts (rocq/rocq-prover:dev)	2m 43s
custom_image / docker-coq / opam / apt-get install more (coqorg/coq:latest)	2m 45s
custom_image / docker-coq / opam / apt-get install more (rocq/rocq-prover:dev)	2m 46s
custom_image / docker-coq / opam+make / upload-artifacts (coqorg/coq:latest)	2m 14s
custom_image / docker-mathcomp / opam / env+GITHUB_ENV (mathcomp/mathcomp:latest-coq-8.19)	3m 50s
	1h 4m 36s

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