build(deps-dev): bump assert-diff from 3.0.3 to 3.0.4 (#2701)

Bumps [assert-diff](https://github.com/pihvi/assert-diff) from 3.0.3 to 3.0.4.
- [Commits](https://github.com/pihvi/assert-diff/commits)

---
updated-dependencies:
- dependency-name: assert-diff
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]