fix(deps): bump @contentful/app-sdk from 4.3.1 to 4.3.3

Bumps [@contentful/app-sdk](https://github.com/contentful/ui-extensions-sdk) from 4.3.1 to 4.3.3.
- [Release notes](https://github.com/contentful/ui-extensions-sdk/releases)
- [Changelog](https://github.com/contentful/ui-extensions-sdk/blob/master/CHANGELOG.md)
- [Commits](contentful/ui-extensions-sdk@v4.3.1...v4.3.3)

---
updated-dependencies:
- dependency-name: "@contentful/app-sdk"
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>