It is uncertain on which version the bot is running in production, and
those with a lack of access to the production infrastructure have almost
no way to get such information.

Expand the "/ping" slash command to actually mention which version it is
running as well as the date on which it was built, more specfifically it
now says:

    > Pong! Running on version v1.2.3-g1a2b3c (2026-02-28)

That way we don't have to approach the lucky few folks with access and
badger them with primitive questions. :)

Signed-off-by: Chris Sdogkos <work@chris-sdogkos.com>