Changes:
* Version bump to 2.1.2
* Makes LibreSSL non-dependent on Brewed-OpenSSL being available for CA
creation and thus actual useful functionality. This steals the
bootstrapping method from OpenSSL and replicates it for the same
function here.
ClosesHomebrew/homebrew#34740.
Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>