Bump is-terminal from 0.4.4 to 0.4.9

Bumps [is-terminal](https://github.com/sunfishcode/is-terminal) from 0.4.4 to 0.4.9.
- [Commits](sunfishcode/is-terminal@v0.4.4...v0.4.9)

---
updated-dependencies:
- dependency-name: is-terminal
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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