## What changes were proposed in this pull request?

This PR sets the R package version while tagging releases. Note that since R doesn't accept `-SNAPSHOT` in version number field, we remove that while setting the next version

## How was this patch tested?

Tested manually by running locally

Author: Shivaram Venkataraman <shivaram@cs.berkeley.edu>

Closes #15223 from shivaram/sparkr-version-change.