Add changelog for 12.1.7 #7305

Job	Run time
get_postgres_versions_from_file	7s
rpm_build_tests (oraclelinux-8, 14)	1m 58s
deb_build_tests (debian-buster-all, 14)	1m 56s
rpm_build_tests (oraclelinux-8, 15)	1m 56s
deb_build_tests (debian-buster-all, 15)	1m 54s
rpm_build_tests (oraclelinux-8, 16)	2m 2s
deb_build_tests (debian-buster-all, 16)	1m 58s
rpm_build_tests (almalinux-8, 14)	1m 49s
deb_build_tests (debian-bookworm-all, 14)	2m 10s
rpm_build_tests (almalinux-8, 15)	1m 51s
deb_build_tests (debian-bookworm-all, 15)	2m 9s
rpm_build_tests (almalinux-8, 16)	2m 2s
deb_build_tests (debian-bookworm-all, 16)	2m 14s
rpm_build_tests (almalinux-9, 14)	1m 48s
deb_build_tests (debian-bullseye-all, 14)	2m 0s
rpm_build_tests (almalinux-9, 15)	1m 52s
deb_build_tests (debian-bullseye-all, 15)	2m 1s
rpm_build_tests (almalinux-9, 16)	2m 0s
deb_build_tests (debian-bullseye-all, 16)	1m 57s
deb_build_tests (ubuntu-focal-all, 14)	2m 2s
deb_build_tests (ubuntu-focal-all, 15)	1m 54s
deb_build_tests (ubuntu-focal-all, 16)	1m 56s
deb_build_tests (ubuntu-jammy-all, 14)	2m 7s
deb_build_tests (ubuntu-jammy-all, 15)	2m 6s
deb_build_tests (ubuntu-jammy-all, 16)	2m 19s
	48m 8s

Provide feedback