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OpenSSLv3 will affect both incoming and outgoing connection

Drew Blessing requested to merge dblessing_update_opensslv3_callout into master

What does this MR do and why?

The OpenSSL v3 callout previously only mentioned incoming connections. However, depending on the installation, incoming connections may already use TLSv1.2+ which is OpenSSLv3-compatible. As an example, Nginx in Omnibus has defaulted to TLSv1.2 and 1.3 since 5 years ago and most clients (modern browsers on both desktop and mobile) will already be capable of TLSv1.2+.

Perhaps more important is that all outbound connections (LDAP, WebHooks, etc.) must use OpenSSL v3/TLS1.2+ after %17.5. This MR updates the callout banner to say all connections rather than incoming.

Related to https://gitlab.com/gitlab-org/gitlab/-/issues/480470#top

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Edited by Drew Blessing

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