heroku-toolbelt 3.12.1

Closes #33231.
adobe-air-sdk 15.0.0.302

Closes #33232.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
hydra: added openssl dep

How didn’t I spot this one before now? Hydra uses OpenSSL. It also uses
mysql, so that’s now stated. Added a mirror and stylistic changes as
well.
adobe-air-sdk: add 15.0.0.302 bottle.
heroku-toolbelt: add 3.12.1 bottle.