replace ReleaseOnlyWithLatest with PromptIfStale
Merge pull request #1117 from duckduckgo/zaahir/remove-dzil-ReleaseOnlyWithLatest

replace ReleaseOnlyWithLatest with PromptIfStale
DuckSay: Only call the function if there is an argument.

So the old implementation was that `ddg_spice_duck_say()` was getting called every time, and the problem with that is it gets executed first before reddit even gets back to us.
DuckSay: fmt