message: Update pull_request_template.md
  Added bullet 6, this was added and submitted but did not make through
diff: @@ -3,3 +3,4 @@ Please consider the following when creating a PR:
  * Provide a useful description of this PR, suitably verbose, aimed at helping reviewers and contributors
  * Update all relevant changelogs
  * Provide a link to the GitHub issue relating to this PR
  +* Identify if any downstream impact as in to, SDKs, SmartContracts etc
  