fix: package.json & package-lock.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-HTTPPROXYMIDDLEWARE-8229906
- https://snyk.io/vuln/SNYK-JS-NEXT-8186172

package.json

@@ -95,7 +95,7 @@
     "highlightjs-curl": "^1.3.0",
     "hot-shots": "^10.0.0",
     "html-entities": "^2.3.3",
-    "http-proxy-middleware": "2.0.6",
+    "http-proxy-middleware": "2.0.7",
     "imurmurhash": "^0.1.4",
     "is-svg": "5.0.0",
     "javascript-stringify": "^2.1.0",
@@ -111,7 +111,7 @@
     "mdast-util-to-markdown": "2.0.0",
     "mdast-util-to-string": "^4.0.0",
     "morgan": "^1.10.0",
-    "next": "13.5.4",
+    "next": "14.2.7",
     "ora": "^7.0.1",
     "parse5": "7.1.2",
     "port-used": "^2.0.8",