chore(deps): bump sharp from 0.26.3 to 0.28.3 (#751)

Bumps [sharp](https://github.com/lovell/sharp) from 0.26.3 to 0.28.3.
- [Release notes](https://github.com/lovell/sharp/releases)
- [Changelog](https://github.com/lovell/sharp/blob/master/docs/changelog.md)
- [Commits](https://github.com/lovell/sharp/compare/v0.26.3...v0.28.3)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -34,7 +34,7 @@
     "mime": "^2.4.5",
     "node-webpmux": "^3.0.0",
     "puppeteer": "^5.2.1",
-    "sharp": "^0.26.3"
+    "sharp": "^0.28.3"
   },
   "devDependencies": {
     "eslint": "^7.27.0",