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Downgrade OpenSSL version to 1.1.1

Stan Hu requested to merge revert-788ed3ac into master

What does this MR do?

This reverts !7797 (merged) because this breaks LDAP and other client integrations that don't support TLS 1.2: https://github.com/openssl/openssl/issues/13299#issuecomment-722124937

TLS 1.0 and 1.1 are supported by OpenSSL 3 if SSLContext#security_level= is set to 0, but as far as I can tell there's no simple way to ensure that this is enabled by default right now. So until we do this properly or have a proper deprecation process for TLS 1.1 and 1.0, we probably need to stay on OpenSSL 1.1.1.

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Edited by Robert Marshall

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