build(deps): bump canvas from 2.10.1 to 2.11.0

Bumps [canvas](https://github.com/Automattic/node-canvas) from 2.10.1 to 2.11.0.
- [Release notes](https://github.com/Automattic/node-canvas/releases)
- [Changelog](https://github.com/Automattic/node-canvas/blob/master/CHANGELOG.md)
- [Commits](Automattic/node-canvas@v2.10.1...v2.11.0)

---
updated-dependencies:
- dependency-name: canvas
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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