ci: fix bad expansion of an array variable in build_libpq.sh

ci: fix bad expansion of an array variable in build_libpq.sh

* ci: fix bad expansion of an array variable in build_libpq.sh

The `options` array variable have been introduced in
`adb8336a392a71a3cb2ddf18bd9b17238a01a06e` but is used with `$options`
which only expand the 1st value (for bash).

The full expansion have to be done with `${options[*]}`

Note that `-shared` and `-fPIC` options are still used as they are
enabled by default by `./Configure`, but the `zlib` option is not taken
into account (disabled by default)

* ci: fix wrong command

`./configure` does not exists

Fix #1178