ci: Bump centos gcc

ci/test/03_test_script.sh

@@ -93,6 +93,8 @@ fi
 if [ -z "$NO_DEPENDS" ]; then
   if [[ $CI_IMAGE_NAME_TAG == *centos* ]]; then
     SHELL_OPTS="CONFIG_SHELL=/bin/dash"
+    # shellcheck disable=SC1090
+    source "/opt/rh/gcc-toolset-${STREAM_GCC_V}/enable"
   else
     SHELL_OPTS="CONFIG_SHELL="
   fi