Merge pull request #32056 from backstage/renovate/nextjs-monorepo

fix(deps): update nextjs monorepo to v15.5.7

docs-ui/package.json

@@ -24,7 +24,7 @@
     "@lezer/highlight": "^1.2.1",
     "@mdx-js/loader": "^3.1.0",
     "@mdx-js/react": "^3.1.0",
-    "@next/mdx": "15.5.6",
+    "@next/mdx": "15.5.7",
     "@remixicon/react": "^4.6.0",
     "@storybook/react": "^8.6.12",
     "@uiw/codemirror-themes": "^4.23.7",
@@ -32,7 +32,7 @@
     "clsx": "^2.1.1",
     "html-react-parser": "^5.2.5",
     "motion": "^12.4.1",
-    "next": "15.4.8",
+    "next": "15.5.7",
     "next-mdx-remote-client": "^2.1.2",
     "prop-types": "^15.8.1",
     "react": "19.1.1",
@@ -49,7 +49,7 @@
     "@types/react-dom": "19.1.7",
     "chokidar": "^3.6.0",
     "eslint": "^8",
-    "eslint-config-next": "15.5.6",
+    "eslint-config-next": "15.5.7",
     "lightningcss": "^1.28.2",
     "typescript": "^5",
     "unified": "^11.0.4"