Bump nette/tester from 2.5.3 to 2.5.4 (#1412)

Bumps [nette/tester](https://github.com/nette/tester) from 2.5.3 to 2.5.4.
- [Release notes](https://github.com/nette/tester/releases)
- [Commits](nette/tester@v2.5.3...v2.5.4)

---
updated-dependencies:
- dependency-name: nette/tester
  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>