build(deps): bump @mui/x-date-pickers from 7.29.1 to 8.15.0

Bumps [@mui/x-date-pickers](https://github.com/mui/mui-x/tree/HEAD/packages/x-date-pickers) from 7.29.1 to 8.15.0.
- [Release notes](https://github.com/mui/mui-x/releases)
- [Changelog](https://github.com/mui/mui-x/blob/master/CHANGELOG.md)
- [Commits](https://github.com/mui/mui-x/commits/v8.15.0/packages/x-date-pickers)

---
updated-dependencies:
- dependency-name: "@mui/x-date-pickers"
  dependency-version: 8.15.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

package-lock.json

@@ -29,7 +29,7 @@
     "@mui/icons-material": "^6.4.2",
     "@mui/material": "^6.1.6",
     "@mui/utils": "^6.1.6",
-    "@mui/x-date-pickers": "^7.28.3",
+    "@mui/x-date-pickers": "^8.15.0",
     "@tanstack/react-table": "^8.20.5",
     "@types/d3": "^7.4.3",
     "@types/node": "^20.17.6",

packages/diracx-web-components/package.json

@@ -20,7 +20,7 @@
     "@mui/icons-material": "^6.4.2",
     "@mui/material": "^6.1.6",
     "@mui/utils": "^6.1.6",
-    "@mui/x-date-pickers": "^7.28.3",
+    "@mui/x-date-pickers": "^8.15.0",
     "@tanstack/react-table": "^8.20.5",
     "autoprefixer": "10.4.20",
     "next": "15.3.1",