Bump MUI X to ^8.8.0 (#5080)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

docs/package.json

@@ -34,11 +34,11 @@
     "@mui/stylis-plugin-rtl": "^7.2.0",
     "@mui/system": "^7.2.0",
     "@mui/utils": "^7.2.0",
-    "@mui/x-data-grid": "^8.6.0",
-    "@mui/x-data-grid-pro": "^8.6.0",
-    "@mui/x-date-pickers": "^8.6.0",
-    "@mui/x-date-pickers-pro": "^8.6.0",
-    "@mui/x-license": "^8.6.0",
+    "@mui/x-data-grid": "^8.8.0",
+    "@mui/x-data-grid-pro": "^8.8.0",
+    "@mui/x-date-pickers": "^8.8.0",
+    "@mui/x-date-pickers-pro": "^8.8.0",
+    "@mui/x-license": "^8.8.0",
     "@toolpad/core": "workspace:*",
     "@toolpad/studio-components": "^0.13.0",
     "@toolpad/studio-runtime": "^0.13.0",

package.json

@@ -49,7 +49,7 @@
     "@mui/internal-markdown": "2.0.7",
     "@mui/internal-scripts": "2.0.10",
     "@mui/monorepo": "github:mui/material-ui#3641a0b7b5c4506b7d44f3241580087b56482c74",
-    "@mui/x-charts": "^8.6.0",
+    "@mui/x-charts": "^8.8.0",
     "@next/eslint-plugin-next": "15.3.4",
     "@playwright/test": "1.54.1",
     "@testing-library/jest-dom": "^6.6.3",

packages/toolpad-core/package.json

@@ -43,8 +43,8 @@
   "dependencies": {
     "@babel/runtime": "^7.27.6",
     "@mui/utils": "^7.2.0",
-    "@mui/x-data-grid": "^8.6.0",
-    "@mui/x-date-pickers": "^8.6.0",
+    "@mui/x-data-grid": "^8.8.0",
+    "@mui/x-date-pickers": "^8.8.0",
     "@toolpad/utils": "workspace:*",
     "client-only": "^0.0.1",
     "dayjs": "1.11.13",
@@ -57,8 +57,8 @@
     "@emotion/react": "11.14.0",
     "@mui/icons-material": "^7.2.0",
     "@mui/material": "^7.2.0",
-    "@mui/x-data-grid-premium": "^8.6.0",
-    "@mui/x-data-grid-pro": "^8.6.0",
+    "@mui/x-data-grid-premium": "^8.8.0",
+    "@mui/x-data-grid-pro": "^8.8.0",
     "@standard-schema/spec": "^1.0.0",
     "@tanstack/react-router": "^1.127.3",
     "@types/invariant": "2.2.37",