Update pull_request_template.md (#16075)

Update PR template to include additional steps for PRs containing
database migrations.

.github/pull_request_template.md

@@ -10,6 +10,10 @@ If some of the following don't apply, delete the relevant line.
 - [ ] Input data is properly validated, `SELECT *` is avoided, SQL injection is prevented (using placeholders for values in statements)
 - [ ] Added support on fleet's osquery simulator `cmd/osquery-perf` for new osquery data ingestion features.
 - [ ] Added/updated tests
+- [ ] If database migrations are included, checked table schema to confirm autoupdate 
+- For database migrations:
+  - [ ] Checked schema for all modified table for columns that will auto-update timestamps during migration.
+  - [ ] Confirmed that updating the timestamps is acceptable, and will not cause unwanted side effects.
 - [ ] Manual QA for all new/changed functionality
   - For Orbit and Fleet Desktop changes:
     - [ ] Manual QA must be performed in the three main OSs, macOS, Windows and Linux.