How did I suppress the «Composer key was disabled» warning from `composer.amasty.com`?

Administration Third-party extensions
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587038333-67d82a13-0ca1-4dba-abfd-8071bda219d41269×186 13.1 KB

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How did I work around the «curl error 28 while downloading https://composer.amasty.com/community/packages.json: Recv failure: Connection was reset» fatal error on any Composer update / require command?