build(deps): bump automattic/woocommerce from 3.1.0 to 3.1.1

Bumps [automattic/woocommerce](https://github.com/woocommerce/wc-api-php) from 3.1.0 to 3.1.1.
- [Release notes](https://github.com/woocommerce/wc-api-php/releases)
- [Commits](woocommerce/wc-api-php@3.1.0...3.1.1)

---
updated-dependencies:
- dependency-name: automattic/woocommerce
  dependency-version: 3.1.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]