Bump prop-types from 15.7.2 to 15.8.1 (#390)

Bumps [prop-types](https://github.com/facebook/prop-types) from 15.7.2 to 15.8.1.
- [Changelog](https://github.com/facebook/prop-types/blob/main/CHANGELOG.md)
- [Commits](https://github.com/facebook/prop-types/compare/v15.7.2...v15.8.1)

---
updated-dependencies:
- dependency-name: prop-types
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -27,7 +27,7 @@
     "@mui/icons-material": "^5.14.8",
     "@mui/material": "^5.14.8",
     "papaparse": "^5.2.0",
-    "prop-types": "^15.7.2",
+    "prop-types": "^15.8.1",
     "ra-language-chinese": "^2.0.10",
     "ra-language-french": "^4.13.3",
     "ra-language-german": "^3.13.4",