build(deps-dev): bump the minor group with 2 updates

Bumps the minor group with 2 updates: [mypy](https://github.com/python/mypy) and [nox](https://github.com/wntrblm/nox).


Updates `mypy` from 2.1.0 to 2.3.0
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v2.1.0...v2.3.0)

Updates `nox` from 2026.4.10 to 2026.7.11
- [Release notes](https://github.com/wntrblm/nox/releases)
- [Changelog](https://github.com/wntrblm/nox/blob/main/CHANGELOG.md)
- [Commits](wntrblm/nox@2026.04.10...2026.07.11)

---
updated-dependencies:
- dependency-name: mypy
  dependency-version: 2.3.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: minor
- dependency-name: nox
  dependency-version: 2026.7.11
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: minor
...

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

Author: dependabot[bot]

pyproject.toml

@@ -73,14 +73,14 @@ dev-mkdocs = [
   "frequenz-repo-config[lib] == 0.18.0",
 ]
 dev-mypy = [
-  "mypy == 2.1.0",
+  "mypy == 2.3.0",
   "types-networkx>=3.6.1.20251220",
   "types-Markdown == 3.10.2.20260518",
   # For checking the noxfile, docs/ script, and tests
   "frequenz-gridpool[dev-mkdocs,dev-noxfile,dev-pytest]",
 ]
 dev-noxfile = [
-  "nox == 2026.4.10",
+  "nox == 2026.7.11",
   "frequenz-repo-config[lib] == 0.18.0",
 ]
 dev-pylint = [