SSL: disabled certificate compression by default with OpenSSL.

Certificate compression is supported since OpenSSL 3.2, it is enabled
automatically as negotiated in a TLSv1.3 handshake.

Using certificate compression and decompression in runtime may be
suboptimal in terms of CPU and memory consumption in certain typical
scenarios, hence it is disabled by default on both server and client
sides.  It can be enabled with ssl_conf_command and similar directives
in upstream as appropriate, for example:

    ssl_conf_command Options RxCertificateCompression;
    ssl_conf_command Options TxCertificateCompression;

Compressing server certificates requires additional support, this is
addressed separately.

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