Fix dependencies

Unfortunately nextjs 15 does not seem to be compatible with storybook.

frontend/package.json

@@ -27,7 +27,8 @@
     "test:storybook": "test-storybook --coverage --coverageDirectory coverage-storybook",
     "storybook": "storybook dev -p 6006",
     "storybook:await": "bash -c \"until curl --output /dev/null --silent --head --fail http://localhost:6006; do printf '.'; sleep 3; done\"",
-    "storybook:build": "storybook build"
+    "storybook:build": "storybook build",
+    "next:upgrade": "npx @next/codemod@canary upgrade latest"
   },
   "nyc": {
     "reporter": [
@@ -44,7 +45,7 @@
     "@fortawesome/react-fontawesome": "^0.2.2",
     "@hookform/resolvers": "^3.9.1",
     "bootstrap": "^5.3.3",
-    "next": "15.0.2",
+    "next": "14.2.12",
     "openid-client": "^6.1.3",
     "playwright-test-coverage": "^1.2.12",
     "primereact": "^10.8.4",
@@ -58,19 +59,19 @@
     "yup": "^1.4.0"
   },
   "devDependencies": {
-    "@chromatic-com/storybook": "1.9.0",
+    "@chromatic-com/storybook": "^3.2.2",
     "@formatjs/cli": "^6.2.12",
     "@playwright/experimental-ct-react": "^1.48.1",
     "@playwright/test": "^1.48.1",
     "@storybook/addon-coverage": "^1.0.4",
-    "@storybook/addon-essentials": "8.3.6",
-    "@storybook/addon-interactions": "8.3.6",
-    "@storybook/addon-links": "8.3.6",
-    "@storybook/blocks": "8.3.6",
-    "@storybook/nextjs": "8.3.6",
-    "@storybook/preview-api": "^8.3.6",
-    "@storybook/react": "8.3.6",
-    "@storybook/test": "8.3.6",
+    "@storybook/addon-essentials": "^8.4.2",
+    "@storybook/addon-interactions": "^8.4.2",
+    "@storybook/addon-links": "^8.4.2",
+    "@storybook/blocks": "^8.4.2",
+    "@storybook/nextjs": "^8.4.2",
+    "@storybook/preview-api": "^8.4.2",
+    "@storybook/react": "^8.4.2",
+    "@storybook/test": "^8.4.2",
     "@storybook/test-runner": "^0.19.1",
     "@testing-library/dom": "^10.4.0",
     "@testing-library/jest-dom": "^6.5.0",
@@ -86,13 +87,13 @@
     "eslint-config-next": "14.2.12",
     "eslint-config-prettier": "^9.1.0",
     "eslint-plugin-prettier": "^5.2.1",
-    "eslint-plugin-storybook": "^0.10.1",
+    "eslint-plugin-storybook": "^0.11.0",
     "jest": "^29.7.0",
     "jest-environment-jsdom": "^29.7.0",
     "nyc": "^17.1.0",
     "prettier": "^3.3.3",
     "sass": "^1.79.1",
-    "storybook": "8.3.6",
+    "storybook": "^8.4.2",
     "storybook-react-intl": "^3.1.1",
     "ts-node": "^10.9.2",
     "typescript": "^5",