test_https.rb - fix test_session_reuse_but_expire

[MSP-Greg]

See issue ruby/openssl#703

Currently, test code uses http.ssl_timeout = -1. A negative timeout many would consider to be undefined. As discussed in the ruby/openssl issue, OpenSSL 3.2 changed the timeout value type from signed to unsigned.

So, the previous test was relying on behavior that was undefined.

Changed the timeout value to 1, and added a sleep 1.25 command to wait for the second socket connection.

Using a negative value previously performed the equivalent of 'no session reuse'. A better solution would be to add
a session_cache_mode accessor. I can do that in another PR if there's interest.

[hsbt]

I try this with ruby/ruby.