Fix parsing of rolling-release version. #12001

Job	Run time
build_details	4s
build_opam (4.14.x)	9m 5s
build_js	2m 20s
build_opam (5.2.x)	5m 16s
lezer_parse	47s
tree_sitter_parse	47s
build_no_depopts	6m 29s
build_posix (debian_trixie, amd64)	16m 6s
build_win32 (x64)	10m 40s
run_tests (@citest)	13m 26s
build_posix (debian_trixie, arm64)	13m 0s
run_tests (@doctest)	8m 13s
build_posix (debian_bookworm, amd64)	14m 52s
update_doc	0s
run_tests (@mediatest)	12m 25s
build_posix (debian_bookworm, arm64)	12m 1s
build_posix (ubuntu_oracular, amd64)	14m 0s
build_posix (ubuntu_oracular, arm64)	12m 36s
build_posix (ubuntu_noble, amd64)	14m 46s
build_posix (ubuntu_noble, arm64)	13m 1s
build_posix (alpine, amd64)	10m 18s
build_posix (alpine, arm64)	8m 25s
fetch_s3_artifacts	21s
build_docker (amd64)	2m 49s
build_docker (arm64)	1m 42s
build_docker_minimal (amd64)	2m 31s
build_docker_alpine (amd64)	58s
build_docker_minimal (arm64)	1m 42s
update_release	0s
build_docker_alpine (arm64)	56s
build_docker_alpine_minimal (amd64)	1m 3s
build_docker_alpine_minimal (arm64)	47s
build_docker_release-minimal	0s
build_docker_release	0s
	3h 31m 26s

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