meta-task to group the tasks triggered by Let's Encrypt issuance chains update due to their old root CA expiring on September 30, 2021: https://letsencrypt.org/docs/dst-root-ca-x3-expiration-september-2021/
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This is also being covered (for the public-facing side of things) in https://wikitech.wikimedia.org/wiki/HTTPS/2021_Let%27s_Encrypt_root_expiry , which Johan has kindly copied out to the upcoming Monday Tech News and to https://meta.wikimedia.org/wiki/HTTPS/2021_Let%27s_Encrypt_root_expiry for potential translations!
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Seeing as the event has passed and all subtasks are closed, is this ready to be closed?