Upgrade

package.json

@@ -7,27 +7,28 @@
     "type": "git",
     "url": "https://gitlab.com/antora/antora-ui-default.git"
   },
+  "type": "commonjs",
   "engines": {
-    "node": ">= 18"
+    "node": "20"
   },
   "browserslist": [
     "last 2 versions"
   ],
   "devDependencies": {
-    "@asciidoctor/core": "~2.2",
+    "@asciidoctor/core": "~3.0",
     "@fontsource/roboto": "~5.0",
     "@fontsource/roboto-mono": "~5.0",
     "@vscode/gulp-vinyl-zip": "~2.5",
-    "autoprefixer": "~10.4",
-    "browser-pack-flat": "~3.5",
+    "autoprefixer": "~9.7",
+    "browser-pack-flat": "~3.4",
     "browserify": "~17.0",
-    "cssnano": "~4.1",
+    "cssnano": "^7.0.1",
     "eslint": "~6.8",
     "eslint-config-standard": "~14.1",
-    "eslint-plugin-import": "~2.20",
+    "eslint-plugin-import": "~2.29",
     "eslint-plugin-node": "~11.1",
-    "eslint-plugin-promise": "~4.3",
-    "eslint-plugin-standard": "^5.0.0",
+    "eslint-plugin-promise": "~4.2",
+    "eslint-plugin-standard": "~5.0",
     "fancy-log": "~2.0",
     "fs-extra": "~11.2",
     "gulp": "~5.0",
@@ -40,18 +41,22 @@
     "gulp-uglify": "~3.0",
     "handlebars": "~4.7",
     "highlight.js": "^11.9.0",
-    "js-yaml": "~3.13",
+    "imagemin-svgo": "^10.0.1",
+    "js-yaml": "~4.1",
     "merge-stream": "~2.0",
     "postcss": "^8.4",
-    "postcss-calc": "~7.0",
-    "postcss-custom-properties": "~13.3",
+    "postcss-calc": "~9.0",
+    "postcss-custom-properties": "~9.1",
     "postcss-import": "~16.1",
+    "postcss-markdown": "^1.2.0",
+    "postcss-svgo": "^6.0.3",
     "postcss-url": "~10.1",
     "prettier-eslint": "~16.3",
     "require-directory": "~2.1",
     "require-from-string": "~2.0",
-    "stylelint": "~13.3",
+    "stylelint": "~13.13",
     "stylelint-config-standard": "~20.0",
-    "vinyl-fs": "~3.0"
+    "svgo": "^2.8.0",
+    "vinyl-fs": "~4.0"
   }
-}
+}