let go YAML's `not_found` exception #11923

Job	Run time
build_details	3s
build_js	2m 11s
build_opam (4.14.x)	8m 46s
build_opam (5.2.x)	5m 26s
lezer_parse	49s
build_no_depopts	5m 58s
build_win32 (x64)	4m 46s
build_posix (debian_trixie, amd64)	14m 36s
build_posix (debian_trixie, arm64)	12m 54s
run_tests (@citest)	12m 36s
tree_sitter_parse	50s
build_posix (debian_bookworm, amd64)	14m 18s
run_tests (@doctest)	8m 5s
update_doc	0s
build_posix (debian_bookworm, arm64)	12m 41s
run_tests (@mediatest)	12m 1s
build_posix (ubuntu_oracular, amd64)	13m 38s
build_posix (ubuntu_oracular, arm64)	12m 5s
build_posix (ubuntu_noble, amd64)	14m 5s
build_posix (ubuntu_noble, arm64)	12m 22s
build_posix (alpine, amd64)	10m 40s
build_posix (alpine, arm64)	8m 2s
fetch_s3_artifacts	16s
update_release	0s
build_docker	0s
build_docker_alpine	0s
build_docker_minimal	0s
build_docker_alpine_minimal	0s
build_docker_release	0s
build_docker_release-minimal	0s
	3h 7m 8s

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