Update release-notes-dev.md

Author: UrszulaNeuman

docs/release-notes/release-notes-dev.md

@@ -6,6 +6,7 @@ Changes merged into master
 | Jira Task | GitHub Issue | Type | Description |
 |-----------|--------------|------|-------------|
 |I04_1-396||Major|Upgrade library qt4 to qt5 and update the layout|
+|I04_1-399||Minor|Puck scanner - add scan countdown to the gui|
 
 Change Types:
 * Major - Backward incompatible change