Bump pytest-asyncio from 0.25.3 to 0.26.0

Bumps [pytest-asyncio](https://github.com/pytest-dev/pytest-asyncio) from 0.25.3 to 0.26.0.
- [Release notes](https://github.com/pytest-dev/pytest-asyncio/releases)
- [Commits](pytest-dev/pytest-asyncio@v0.25.3...v0.26.0)

---
updated-dependencies:
- dependency-name: pytest-asyncio
  dependency-version: 0.26.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

pyproject.toml

@@ -78,7 +78,7 @@ dev-pytest = [
   "pytest == 8.3.4",
   "frequenz-repo-config[extra-lint-examples] == 0.13.2",
   "pytest-mock == 3.14.0",
-  "pytest-asyncio == 0.25.3",
+  "pytest-asyncio == 0.26.0",
   "async-solipsism == 0.7",
   "hypothesis == 6.124.9",
   "frequenz-client-base",