Ticket6440: support CCD100 mk3

See #6440

Author: FreddieAkeroyd

Diff for: release_notes/ReleaseNotes_Upcoming.md

@@ -19,6 +19,7 @@ See [here](https://github.com/ISISComputingGroup/IBEX/wiki#instrument-informatio
 
 | Ticket | Device | Notes|
 | ------ | ------ | -----|
+|[#6440](https://github.com/ISISComputingGroup/IBEX/issues/6440)|Add support for CCD100 mk3|
 
 ### Modified devices