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 1.19.1 to 1.20.1
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v1.19.1...v1.20.1)

Updates `nox` from 2026.2.9 to 2026.4.10
- [Release notes](https://github.com/wntrblm/nox/releases)
- [Changelog](https://github.com/wntrblm/nox/blob/main/CHANGELOG.md)
- [Commits](wntrblm/nox@2026.02.09...2026.04.10)

---
updated-dependencies:
- dependency-name: mypy
  dependency-version: 1.20.1
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: minor
- dependency-name: nox
  dependency-version: 2026.4.10
  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

@@ -66,12 +66,12 @@ dev-mkdocs = [
   "frequenz-repo-config[lib] == 0.17.0",
 ]
 dev-mypy = [
-  "mypy == 1.19.1",
+  "mypy == 1.20.1",
   "types-Markdown == 3.10.2.20260408",
   # For checking the noxfile, docs/ script, and tests
   "flake8-numbers[dev-mkdocs,dev-noxfile,dev-pytest]",
 ]
-dev-noxfile = ["nox == 2026.2.9", "frequenz-repo-config[lib] == 0.17.0"]
+dev-noxfile = ["nox == 2026.4.10", "frequenz-repo-config[lib] == 0.17.0"]
 dev-pylint = [
   "pylint == 4.0.5",
   # For checking the noxfile, docs/ script, and tests