Bump word-wrap from 1.2.3 to 1.2.4 in /firebase/functions (#194)

Bumps [word-wrap](https://github.com/jonschlinkert/word-wrap) from 1.2.3 to 1.2.4.
- [Release notes](https://github.com/jonschlinkert/word-wrap/releases)
- [Commits](jonschlinkert/word-wrap@1.2.3...1.2.4)

---
updated-dependencies:
- dependency-name: word-wrap
  dependency-type: indirect
...

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Author: dependabot[bot]