Update curl version on OpenSUSE-16.0

The version that comes with the distro is buggy, it returns success
instead of failure for the command:

    curl --verbose --fail -L --retry 5 --retry-delay 5 -o filename \
        http://url/that/returns/404

The upstream ticket is: https://github.com/curl/curl/issues/17554

Pick-to: 6.11
Change-Id: Ic763c10a308a24c921a8d2ae1f1c651e0cbac429
Reviewed-by: Tero Heikkinen <tero.heikkinen@qt.io>

coin/provisioning/qtci-linux-openSUSE-16.0-x86_64/04-zypperpackages.sh

@@ -3,6 +3,10 @@
 
 set -ex
 
+# Curl is pre-installed but the original version is buggy.
+# This line here is to update it.
+sudo zypper -nq install curl
+
 sudo zypper -nq install git gcc13 gcc15-c++ ninja
 sudo /usr/sbin/update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-15 1 \
                                      --slave /usr/bin/g++ g++ /usr/bin/g++-15 \