Update database_version add postgresql 14 and remove versions older than 9.6.

PostgreSQL 12 works the best currently for the install script the other versions are there because they can be installed on FreeBSD 13. However other versions may have issues with PHP package that is built to use PostgreSQL 12.

freebsd/resources/config.sh

@@ -14,7 +14,7 @@ switch_tls=true                 # true or false
 # Database Settings
 database_enabled=true           # true or false
 database_password=random        # random or as a pre-set value
-database_version=12             # Postgres 13, 12, 11, 10, 9.6, 9.5, 9.4
+database_version=12             # Postgres 14, 13, 12, 11, 10, 9.6
 database_host=127.0.0.1         # hostname or IP address
 database_port=5432              # port number
 database_backup=false           # true or false