Update changelog for 3.1.4~dfsg-1~bpo10+1+pureos1 release

5 jobs for wip/sadiq/amber-phone in 5 minutes and 25 seconds
Name Stage Failure
autopkgtest-debian-buster-package Test Package
autodep8-python3     FAIL non-zero exit status 1
autopkgtest [08:05:55]: Binaries: resetting testbed apt configuration
Hit:1 http://deb.debian.org/debian buster InRelease
Hit:2 http://deb.debian.org/debian buster-updates InRelease
Hit:3 http://security.debian.org/debian-security buster/updates InRelease
Hit:4 http://ci.puri.sm scratch InRelease
Reading package lists...
Autopkgtest exited with 4
ERROR: Job failed: exit code 4