chore: Update SCSS variables for color contrast settings and upgrade package dependencies

Author: GioemaNocco

assets/scss/common/_variables.scss

@@ -27,6 +27,11 @@ $pink-500: #d32e9d;
 $primary: $purple;
 $secondary : $pink-500;
 
+// Bootstrap color contrast settings
+$min-contrast-ratio: 3; // Reduce from default 4.5 to 3 to prevent warnings
+$color-contrast-dark: $black;
+$color-contrast-light: $white;
+
 $color-btn-bg: $primary;
 $color-btn-border: darken($primary, 5%);
 $color-btn-text: $white;

config/postcss.config.js

@@ -1,11 +1,11 @@
 const autoprefixer = require('autoprefixer');
-const purgecss = require('@fullhuman/postcss-purgecss');
+const { purgeCSSPlugin } = require('@fullhuman/postcss-purgecss');
 const whitelister = require('purgecss-whitelister');
 
 module.exports = {
   plugins: [
     autoprefixer(),
-    purgecss({
+    purgeCSSPlugin({
       content: [
         './layouts/**/*.html',
         './content/**/*.md',

package.json

@@ -34,31 +34,31 @@
     "version": "auto-changelog -p && git add CHANGELOG.md"
   },
   "devDependencies": {
-    "@babel/cli": "^7.25",
-    "@babel/core": "^7.26",
-    "@babel/preset-env": "^7.26",
-    "@fullhuman/postcss-purgecss": "^6.0",
+    "@babel/cli": "^7.28",
+    "@babel/core": "^7.28",
+    "@babel/preset-env": "^7.28",
+    "@fullhuman/postcss-purgecss": "^7.0",
     "auto-changelog": "^2.5.0",
     "autoprefixer": "^10.4",
     "bootstrap": "^5.3",
     "clipboard": "^2.0",
-    "eslint": "^9.16",
+    "eslint": "^9.37",
     "exec-bin": "^1.0.0",
-    "flexsearch": "^0.7.43",
-    "highlight.js": "^11.10",
+    "flexsearch": "^0.8.212",
+    "highlight.js": "^11.11",
     "hugo-installer": "^4.0",
     "instant.page": "^5.2",
     "katex": "^0.16",
     "lazysizes": "^5.3",
-    "markdownlint-cli": "^0.43.0",
-    "mermaid": "^11.4",
+    "markdownlint-cli": "^0.45",
+    "mermaid": "^11.12",
     "node-fetch": "^3.3",
-    "postcss": "^8.4",
-    "postcss-cli": "^10.1",
+    "postcss": "^8.5",
+    "postcss-cli": "^11.0",
     "purgecss-whitelister": "^2.4",
-    "shx": "^0.3.4",
-    "stylelint": "^15.10",
-    "stylelint-config-standard-scss": "^11.0"
+    "shx": "^0.4.0",
+    "stylelint": "^16.25",
+    "stylelint-config-standard-scss": "^16.0"
   },
   "otherDependencies": {
     "hugo": "0.148.0"