Update semver requirement from <3,>=2.13.0 to >=2.13.0,<4

Updates the requirements on [semver](https://github.com/python-semver/python-semver) to permit the latest version.
- [Release notes](https://github.com/python-semver/python-semver/releases)
- [Changelog](https://github.com/python-semver/python-semver/blob/master/CHANGELOG.rst)
- [Commits](python-semver/python-semver@2.13.0...3.0.0)

---
updated-dependencies:
- dependency-name: semver
  dependency-type: direct:production
...

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

requirements.txt

@@ -1,2 +1,2 @@
 EMMOntoPy>=0.1.3,<1
-semver>=2.13.0,<3
+semver>=2.13.0,<4