Force homebrew to use OpenSSL 1.1

[emptyflask]

OpenSSL 3.0 is released, and Homebrew uses it by default now, but Ruby doesn't support it yet.
See the issue at #409

[emptyflask]

Tested building the latest ruby, truffleruby, and truffleruby-graalvm.
rbx seems broken for an unrelated reason, but I'd be surprised if it's expecting a newer openssl.

[postmodern]

Looks good. Unpinning openssl when rubies start supporting OpenSSL 3.0 may be tricky. OpenSSL 1.1 appears to still be maintained for now, so we don't have to worry about missing any security updates if we continue to target 1.1. Eventually we will want to unpin and switch back to 3.0.

[postmodern]

ruby-install 0.8.3 has been released. Now we wait for homebrew to pick it up.

[aduh95]

https://www.ruby-lang.org/en/news/2021/12/25/ruby-3-1-0-released/ lists that they have updated OpenSSL to 3.0.0, won't that conflict with this change?

[dgholz]

https://www.ruby-lang.org/en/news/2021/12/25/ruby-3-1-0-released/ lists that they have updated OpenSSL to 3.0.0, won't that conflict with this change?

That's the openssl gem's version, which tends to follow the max OpenSSL version it supports. It still works fine with OpenSSL 1.1