Bump react-dom and @types/react-dom in /docs/gremlint

Bumps [react-dom](https://github.com/facebook/react/tree/HEAD/packages/react-dom) and [@types/react-dom](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/react-dom). These dependencies needed to be updated together.

Updates `react-dom` from 17.0.2 to 19.1.1
- [Release notes](https://github.com/facebook/react/releases)
- [Changelog](https://github.com/facebook/react/blob/main/CHANGELOG.md)
- [Commits](https://github.com/facebook/react/commits/v19.1.1/packages/react-dom)

Updates `@types/react-dom` from 17.0.26 to 19.1.7
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/react-dom)

---
updated-dependencies:
- dependency-name: react-dom
  dependency-version: 19.1.1
  dependency-type: direct:production
  update-type: version-update:semver-major
- dependency-name: "@types/react-dom"
  dependency-version: 19.1.7
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

docs/gremlint/package-lock.json

@@ -6,7 +6,7 @@
   "dependencies": {
     "gremlint": "^3.8.0",
     "react": "^18.3.1",
-    "react-dom": "^18.3.1",
+    "react-dom": "^19.2.4",
     "sharp-router": "^4.1.5",
     "styled-components": "^6.1.14",
     "web-vitals": "^5.0.0"
@@ -39,7 +39,7 @@
     "@testing-library/user-event": "^14.6.1",
     "@types/node": "^22.12.0",
     "@types/react": "^18.3.18",
-    "@types/react-dom": "^18.3.5",
+    "@types/react-dom": "^19.2.3",
     "@vitejs/plugin-react": "^4.3.4",
     "gh-pages": "^6.3.0",
     "jsdom": "^26.0.0",