postgresql: security bump to 10.5

Fixes CVE-2018-10915 & CVE-2018-10925

Changelog: https://www.postgresql.org/docs/10/static/release-10-5.html



Signed-off-by: Adam Duskett <aduskett@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>