Use published versions of arrow rather than github shas

[alamb]

Is your feature request related to a problem or challenge? Please describe what you are trying to do.
Currently datafusion relies on a git sha of the arrow-rs crate. Historically this was required to get updates on a more frequent basis than every quarter when Arrow did major releases. With apache/arrow-rs#292 we are implementing biweekly arrow releases.

This also means that any project that uses datafusion and arrow together requires pinning arrow-rs to the exact same gitsha.

Describe the solution you'd like
I propose making datafusion depend on published versions in crates.io

Additional context
Add any other context or screenshots about the feature request here.