Update docs/source/reference/changelog/v1.2.3.txt
Update docs/source/reference/changelog/v1.2.3.txt

Co-authored-by: Maksim Rakitin <80296ac3c2ec8894fe3994152b21dee0e30396ec@users.noreply.github.com>
ericdill/databroker,ericdill/databroker