feat: modernize fe tooling and drop weight

package.json

@@ -1,25 +1,22 @@
 {
   "name": "eptheme",
-  "description": "EP Reisen TYPO3 website package",
-  "version": "3.0.0",
-  "author": "Björn Fromme, [email protected]",
-  "license": "proprietary",
   "scripts": {
     "dev": "./node_modules/.bin/encore dev --watch",
     "build": "NODE_ENV=production ./node_modules/.bin/encore production"
   },
   "engines": {
-    "node": ">=16"
+    "node": ">=20.19.0"
   },
+  "browserslist": [
+    "defaults"
+  ],
   "dependencies": {
     "@hotwired/stimulus": "^3.2.1",
     "@hotwired/stimulus-webpack-helpers": "^1.0.1",
     "@iframe-resizer/parent": "^5.3.2",
     "@splidejs/splide": "^2.4.21",
-    "axios": "^1.6.2",
     "cooltipz-css": "^1.6.8",
     "dayjs": "^1.10.6",
-    "es6-slide-up-down": "^1.0.0",
     "flatpickr": "^4.6.9",
     "glightbox": "^3.0.9",
     "htmx.org": "^1.9.12",
@@ -30,31 +27,22 @@
     "sticky-js": "^1.3.0",
     "stimulus-use": "^0.52.0",
     "vue": "^2.6.14",
-    "vue-router": "^3.5.2",
-    "vue-session": "^1.0.0",
-    "vuex": "^3.6.2",
-    "whatwg-fetch": "^3.6.2"
+    "vue-session": "^1.0.0"
   },
   "devDependencies": {
-    "@babel/plugin-proposal-object-rest-spread": "^7.16.0",
-    "@babel/plugin-syntax-dynamic-import": "^7.8.3",
     "@babel/preset-env": "^7.16.0",
-    "@symfony/webpack-encore": "^2.1.0",
+    "@symfony/webpack-encore": "^4.7.0",
     "@tailwindcss/aspect-ratio": "^0.4.0",
     "@tailwindcss/forms": "^0.5.2",
     "autoprefixer": "^10.4.8",
-    "core-js": "^3.22.5",
-    "document-register-element": "^1.14.10",
     "file-loader": "^6.2.0",
     "postcss": "^8.4.16",
-    "postcss-loader": "^6.2.1",
+    "postcss-loader": "^8.2.1",
     "sass": "^1.53.0",
-    "sass-loader": "^12.6.0",
-    "sass-mq": "^6.0.0",
-    "smoothscroll-polyfill": "^0.4.4",
+    "sass-loader": "^14.2.1",
+    "sass-mq": "^7.0.1",
     "tailwindcss": "^3.1.8",
     "tailwindcss-alt": "^3.0.0",
-    "vue-custom-element": "^3.3.0",
     "vue-loader": "^15.11.1",
     "vue-template-compiler": "^2.6.14"
   }