Update test-unit requirement from ~> 3.5.3 to ~> 3.5.5 (#39)
Update test-unit requirement from ~> 3.5.3 to ~> 3.5.5 (#39)

Updates the requirements on [test-unit](https://github.com/test-unit/test-unit) to permit the latest version.
- [Release notes](https://github.com/test-unit/test-unit/releases)
- [Commits](https://github.com/test-unit/test-unit/compare/3.5.3...3.5.5)

---
updated-dependencies:
- dependency-name: test-unit
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
Co-authored-by: dependabot[bot] <1c358da00a777d4e9898c1280ab801e2df165188@users.noreply.github.com>
kachick/integer-base,kachick/integer-base