Não consigo instalar no meu linux opensuse

Programação
#1

PostgreSQL

linux-49uo:~ # sudo apt-get update
Retrieving repository 'PostgreSQL 11 SLES 42.3 - x86_64 - Updates testing[error]
Repository ‘PostgreSQL 11 SLES 42.3 - x86_64 - Updates testing’ is invalid.
[pgdg-11-updates-testing|https://download.postgresql.org/pub/repos/zypp/testing/11/suse/sles-42.3-x86_64] Valid metadata not found at specified URL
Please check if the URIs defined for this repository are pointing to a valid repository.
Skipping repository ‘PostgreSQL 11 SLES 42.3 - x86_64 - Updates testing’ because of the above error.
Could not refresh the repositories because of errors.

#2

Pelo que me parece a URL do repositório não existe, pois o retorno dela é 404.

A URL que deveria estar apontada seria: [https://download.postgresql.org/pub/repos/zypp/testing/11/suse/sles-12-x86_64]

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