bump postgres version

Author: Justin Iso

config/software/postgresql.rb

@@ -16,7 +16,7 @@
 #
 
 name "postgresql"
-default_version "9.4.25"
+default_version "9.6.24"
 
 dependency "zlib"
 dependency "openssl" # openssl >= 1.1 is compatible with postgresql >=9.4
@@ -41,6 +41,10 @@
   source sha256: "cb98afaef4748de76c13202c14198e3e4717adde49fd9c90fdc81da877520928"
 end
 
+version "9.6.24" do
+  source sha256: "52947ecc119846eace5164399d173576c0d4a47ec116ae58a46a8fd0c576c7c3"
+end
+
 source url: "https://ftp.postgresql.org/pub/source/v#{version}/postgresql-#{version}.tar.bz2"
 relative_path "postgresql-#{version}"