Bump debug from 4.1.1 to 4.3.4 in /functions (#1765)

Bumps [debug](https://github.com/debug-js/debug) from 4.1.1 to 4.3.4.
- [Release notes](https://github.com/debug-js/debug/releases)
- [Commits](debug-js/debug@4.1.1...4.3.4)

---
updated-dependencies:
- dependency-name: debug
  dependency-type: indirect
...

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Author: dependabot[bot]