Bump nette/tester from 2.5.2 to 2.5.3 (#1288)

Bumps [nette/tester](https://github.com/nette/tester) from 2.5.2 to 2.5.3.
- [Release notes](https://github.com/nette/tester/releases)
- [Commits](nette/tester@v2.5.2...v2.5.3)

---
updated-dependencies:
- dependency-name: nette/tester
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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