Update openssl gem to 3.3.1

[Backport #21631]

https://github.com/ruby/openssl/commit/e5153dbbb4

This is for consistency with ruby/ruby.

https://github.com/ruby/openssl/commit/00ad542791

ruby/openssl is licensed under the terms of either the Ruby License or
the 2-Clause BSD License.

The git repository and built .gem files always contained the license
text for both license, but the metadata in the gemspec only specified
the Ruby License. Let's include both.

https://github.com/ruby/openssl/commit/c71714d738

https://github.com/ruby/openssl/commit/6b3dd6a372

 * Reword the description in README for more clarity.

 * Add a compatibility matrix of our stable branches and explain the
   maintenance policy.

 * Remove the obsolete paragraph for how to use the gem in Ruby 2.3,
   which is no longer supported.

https://github.com/ruby/openssl/commit/7691034fcb

Ruby 2.6 has reached EOL on 2022-03. Requiring Ruby 2.7 allows us to
use C99 syntax.

https://github.com/ruby/openssl/commit/f6ba75e51e

JRuby has its own implementation of the `openssl` library in
jruby-openssl. The simplest way for us to allow users to set
openssl as a gem dependency is to ship a stub gem that just
depends on jruby-openssl. This patch adds that to the gemspec.
Additional work may be required to fit this stub gem into the test
and release process.

See #20 for more details.

https://github.com/ruby/openssl/commit/74ccaa5e18

https://github.com/ruby/openssl/commit/c2f7d775c6

https://github.com/ruby/openssl/commit/fceb978a5d