ci: install openssl11 as deps.

.ci/build_packages/tests.sh

@@ -91,6 +91,8 @@ emqx_test(){
             ;;
             "rpm")
                 packagename=$(basename "${PACKAGE_PATH}/${EMQX_NAME}"-*.rpm)
+                # EMQX OTP requires openssl11 to have TLS1.3 support
+                yum install -y openssl11
                 rpm -ivh "${PACKAGE_PATH}/${packagename}"
                 if ! rpm -q emqx | grep -q emqx; then
                     echo "package install error"