Bump the npm_and_yarn at /. security update group with 2 updates

Bumps the npm_and_yarn at /. security update group with 2 updates: [postcss](https://github.com/postcss/postcss) and [next](https://github.com/vercel/next.js).


Updates `postcss` from 8.4.14 to 8.4.31
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.4.14...8.4.31)

Updates `next` from 12.3.4 to 14.0.2
- [Release notes](https://github.com/vercel/next.js/releases)
- [Changelog](https://github.com/vercel/next.js/blob/canary/release.js)
- [Commits](vercel/next.js@v12.3.4...v14.0.2)

---
updated-dependencies:
- dependency-name: postcss
  dependency-type: indirect
- dependency-name: next
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -78,7 +78,7 @@
     "lodash": "^4.17.13",
     "lru-memoize": "^1.1.0",
     "mathjs": "^12.1.0",
-    "next": "^12.3.4",
+    "next": "^14.0.3",
     "next-images": "^1.4.0",
     "next-plugin-antd-less": "^1.8.0",
     "next-redux-wrapper": "^6.0.2",