⬆ Bump mypy from 1.8.0 to 1.15.0

Bumps [mypy](https://github.com/python/mypy) from 1.8.0 to 1.15.0.
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](https://github.com/python/mypy/compare/v1.8.0...v1.15.0)

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

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

requirements-tests.txt

@@ -2,7 +2,7 @@
 -r requirements-docs-tests.txt
 pytest >=7.1.3,<9.0.0
 coverage[toml] >= 6.5.0,< 8.0
-mypy ==1.8.0
+mypy ==1.15.0
 dirty-equals ==0.8.0
 sqlmodel==0.0.23
 flask >=1.1.2,<4.0.0