Bump react-headroom from 3.0.0 to 3.1.1

Bumps [react-headroom](https://github.com/KyleAMathews/react-headroom) from 3.0.0 to 3.1.1.
- [Release notes](https://github.com/KyleAMathews/react-headroom/releases)
- [Commits](KyleAMathews/react-headroom@v3.0.0...v3.1.1)

---
updated-dependencies:
- dependency-name: react-headroom
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

package-lock.json

@@ -9,7 +9,7 @@
     "react": "^16.10.2",
     "react-dom": "^16.10.2",
     "react-easy-emoji": "^1.6.1",
-    "react-headroom": "^3.0.0",
+    "react-headroom": "^3.1.1",
     "react-lottie": "^1.2.3",
     "react-reveal": "^1.2.2",
     "react-scripts": "^4.0.3",