update postgres minor version to 14.7 #2108

Job	Run time
create-db	3s
build-emails	37s
build-and-push-service (gateway, gateway)	12s
build-and-push-service (users-backend, users-backend)	13s
build-and-push-service (association-backend, association-backend)	12s
build-and-push-service (pycon-backend, backend)	12s
build-and-push-service (pretix, pretix)	14s
build-and-push-service (cms, cms)	11s
terraform	1m 25s
wait-aws-update	21s
migrate-users-backend-db	9s
migrate-pycon-backend-db	7s
update-default-apollo-studio-graph (users-backend, https://users-api.python.it/graphql)	11s
update-default-apollo-studio-graph (association-backend, https://association-api.python.it/graphql)	10s
update-default-apollo-studio-graph (pycon-backend, https://admin.pycon.it/graphql)	11s
update-default-apollo-studio-graph (cms, https://cms.python.it/graphql/)	8s
migrate-association-backend-db	14s
	4m 50s

Provide feedback