chore(deps-dev): bump sharp from 0.26.2 to 0.29.0

Bumps [sharp](https://github.com/lovell/sharp) from 0.26.2 to 0.29.0.
- [Release notes](https://github.com/lovell/sharp/releases)
- [Changelog](https://github.com/lovell/sharp/blob/master/docs/changelog.md)
- [Commits](lovell/sharp@v0.26.2...v0.29.0)

---
updated-dependencies:
- dependency-name: sharp
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

package.json

@@ -45,7 +45,7 @@
     "mocha": "8.2.1",
     "mocha.parallel": "0.15.6",
     "postcss": "8.3.6",
-    "sharp": "0.26.2",
+    "sharp": "0.29.0",
     "xo": "0.30.0"
   },
   "scripts": {