Bump react-modal from 3.14.4 to 3.15.1 (#518)

Bumps [react-modal](https://github.com/reactjs/react-modal) from 3.14.4 to 3.15.1.
- [Release notes](https://github.com/reactjs/react-modal/releases)
- [Changelog](https://github.com/reactjs/react-modal/blob/master/CHANGELOG.md)
- [Commits](https://github.com/reactjs/react-modal/compare/v3.14.4...v3.15.1)

---
updated-dependencies:
- dependency-name: react-modal
  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

@@ -43,7 +43,7 @@
     "react-dnd-html5-backend": "^15.1.3",
     "react-dom": "^17.0.2",
     "react-google-recaptcha": "^2.1.0",
-    "react-modal": "^3.14.4",
+    "react-modal": "^3.15.1",
     "sanitize-html": "^2.7.0",
     "tippy.js": "^6.3.7",
     "twemoji": "^14.0.2"