Downgrade less version

Author: roll

ckanext/querytool/fanstatic/css/main.css

@@ -4,6 +4,9 @@ var cleanCSS = require('gulp-clean-css');
 var autoprefixer = require('gulp-autoprefixer');
 // var sourcemaps = require('gulp-sourcemaps'); - Uncomment when developing
 
+// The default Gulp.js task
+gulp.task('default', ['less', 'watch']);
+
 // Rebuild CSS from LESS
 gulp.task('less', function () {
   return gulp.src('ckanext/querytool/fanstatic/less/*.less')
@@ -24,8 +27,5 @@ gulp.task('less', function () {
 
 // Watch for LESS file changes
 gulp.task('watch', function () {
-  gulp.watch(['ckanext/querytool/fanstatic/less/**/*.less'], gulp.parallel('less'));
+  gulp.watch(['ckanext/querytool/fanstatic/less/**/*.less'], ['less']);
 });
-
-// The default Gulp.js task
-gulp.task('default', gulp.parallel('less', 'watch'));

ckanext/querytool/fanstatic/css/public-query-tool.css

@@ -4,12 +4,12 @@
   "devDependencies": {
     "chromedriver": "^2.43.1",
     "doctoc": "^1.3.1",
-    "gulp": "^4.0.0",
-    "gulp-autoprefixer": "^5.0.0",
-    "gulp-clean-css": "^3.9.4",
-    "gulp-less": "^4.0.1",
+    "gulp": "^3.9.1",
+    "gulp-autoprefixer": "^4.1.0",
+    "gulp-clean-css": "^3.9.2",
+    "gulp-less": "^3.4.0",
     "gulp-sourcemaps": "^1.12.1",
-    "less": "^3.8.1",
+    "less": "^2.7.2",
     "saucelabs": "^1.5.0",
     "selenium-server": "3.141.5"
   }