ansible: fix sha1.

The SHA1 on the latest Ansible formula seems to be wrong. Not sure how the bot didn't pick that up, but it seems to be regularly reproducible, both locally & as [discussed here](https://github.com/Homebrew/homebrew/issues/31401). This fixes it.
ansible: update 1.7 bottle.

Closes #31406.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>