chore(deps-dev): bump firebase-tools from 9.9.0 to 9.21.0 (#4184)

Bumps [firebase-tools](https://github.com/firebase/firebase-tools) from 9.9.0 to 9.21.0.
- [Release notes](https://github.com/firebase/firebase-tools/releases)
- [Commits](https://github.com/firebase/firebase-tools/compare/v9.9.0...v9.21.0)

---
updated-dependencies:
- dependency-name: firebase-tools
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

package.json

@@ -64,7 +64,7 @@
     "chai": "4.3.4",
     "eslint-config-prettier": "8.3.0",
     "eslint-plugin-prettier": "3.3.1",
-    "firebase-tools": "9.9.0",
+    "firebase-tools": "9.21.0",
     "husky": "7.0.4",
     "jest-canvas-mock": "2.3.1",
     "lint-staged": "11.2.6",