keybase 0.7.3

keybase: update to 0.7.3

Closes #34564.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
Allow searching/installing Homebrew Casks.

People want to install things like GIMP using Homebrew so let's make it
easier for them to find a decent installation method.

Closes #34496.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
mysql-connector-c++ 1.1.5

Fixes #34561.
mysql-connector-c++: add 1.1.5 bottle.