Migrate to OpenSSL 3.0 (LTS)

[fmarier]

From https://www.openssl.org/source/:

All older versions (including 1.1.1, 1.1.0, 1.0.2, 1.0.0 and 0.9.8) are now out of support and should not be used. Users of these older versions are encouraged to upgrade to 3.2 or 3.0 as soon as possible.