Bump mypy from 1.4.1 to 1.5.0 in /requirements (#1515)

Bumps [mypy](https://github.com/python/mypy) from 1.4.1 to 1.5.0.
- [Commits](https://github.com/python/mypy/compare/v1.4.1...v1.5.0)

---
updated-dependencies:
- dependency-name: mypy
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

requirements/tests.txt

@@ -1,6 +1,6 @@
 # tests
 hydra-core==1.3.2
-mypy==1.4.1
+mypy==1.5.0
 nbmake==1.4.1
 omegaconf==2.3.0
 pytest==7.4.0