Bump wp-cli/import-command from 2.0.17 to 2.0.18 (#1012)

Bumps [wp-cli/import-command](https://github.com/wp-cli/import-command) from 2.0.17 to 2.0.18.
- [Release notes](https://github.com/wp-cli/import-command/releases)
- [Commits](wp-cli/import-command@v2.0.17...v2.0.18)

---
updated-dependencies:
- dependency-name: wp-cli/import-command
  dependency-version: 2.0.18
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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