groonga 4.0.7

- disable libstemmer because Homebrew does not have libstemmer
- add lz4 optional dependency
- add depends_on "openssl" bacause `brew audit groonga` complains using
  old system openssl
groonga: update 4.0.7 bottle.

Closes #33706.

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