Backport PR #14499 to 8.4: drop support for all DES ciphers and simplify cipher list

[github-actions]

Backport PR #14499 to 8.4 branch, original message:

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Remove support for DES-CBC3-SHA https://ciphersuite.info/cs/TLS_RSA_WITH_3DES_EDE_CBC_SHA/

Also unnecessary exclusions for EDH-DSS-DES-CBC3-SHA, EDH-RSA-DES-CBC3-SHA and KRB5-DES-CBC3-SHA since there's already a "!DES" rule.

Before:

❯ bin/logstash -i irb                                                            
[2022-09-07T10:53:12,781][INFO ][logstash.runner          ] Log4j configuration path used is: /Users/joaoduarte/elastic/logstash/config/log4j2.properties
[2022-09-07T10:53:12,786][INFO ][logstash.runner          ] Starting Logstash {"logstash.version"=>"8.5.0", "jruby.version"=>"jruby 9.3.7.0 (2.6.8) 2022-08-16 c79ef237e0 OpenJDK 64-Bit Server VM 17.0.4.1+1 on 17.0.4.1+1 +indy +jit [arm64-darwin]"}
irb(main):001:0> pp OpenSSL::SSL::SSLContext.new.ciphers.map {|c| c.first }.grep /DES/
["DES-CBC3-SHA"]
=> ["DES-CBC3-SHA"]

After:

~/elastic/logstash harden_ssl_ciphers_remove_3des*
❯ git co e6ecfcec7 ./logstash-core/lib/logstash/patches/stronger_openssl_defaults.rb
Updated 1 path from d052c6b0a

~/elastic/logstash harden_ssl_ciphers_remove_3des*
❯ bin/logstash -i irb                                                               
[2022-09-07T10:53:49,432][INFO ][logstash.runner          ] Starting Logstash {"logstash.version"=>"8.5.0", "jruby.version"=>"jruby 9.3.7.0 (2.6.8) 2022-08-16 c79ef237e0 OpenJDK 64-Bit Server VM 17.0.4.1+1 on 17.0.4.1+1 +indy +jit [arm64-darwin]"}
irb(main):001:0> pp OpenSSL::SSL::SSLContext.new.ciphers.map {|c| c.first }.grep /DES/
[]
=> []