ruby 2.1.5

Closes #34216.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
ruby: update 2.1.5 bottle.
bash-git-prompt 2.3.4

Closes #34213.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
libsoxr 0.1.1 (new formula)

Part 1 of closing #34135.
libsoxr: add 0.1.1 bottle.