build(deps-dev): bump @synthetixio/synpress in /dapp-example

Bumps [@synthetixio/synpress](https://github.com/Synthetixio/synpress) from 3.7.3 to 4.1.0.
- [Release notes](https://github.com/Synthetixio/synpress/releases)
- [Commits](https://github.com/Synthetixio/synpress/compare/3.7.3...@synthetixio/[email protected])

---
updated-dependencies:
- dependency-name: "@synthetixio/synpress"
  dependency-version: 4.1.0
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]