Bump pytest-cov from 6.1.1 to 6.2.1 (#1497)

Bumps [pytest-cov](https://github.com/pytest-dev/pytest-cov) from 6.1.1 to 6.2.1.
- [Changelog](https://github.com/pytest-dev/pytest-cov/blob/master/CHANGELOG.rst)
- [Commits](pytest-dev/pytest-cov@v6.1.1...v6.2.1)

---
updated-dependencies:
- dependency-name: pytest-cov
  dependency-version: 6.2.1
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

demos/graphql-demo/requirements-dev.txt

@@ -13,5 +13,5 @@ redis==6.1.0
 mypy==1.15.0
 flake8==7.2.0
 pytest==8.3.5
-pytest-cov==6.1.1
+pytest-cov==6.2.1
 sqlalchemy==2.0.41

demos/moderator/requirements-dev.txt

@@ -15,5 +15,5 @@ mypy==1.15.0
 pytest==8.3.5
 pytest-aiohttp==1.1.0
 pytest-asyncio==0.26.0
-pytest-cov==6.1.1
+pytest-cov==6.2.1
 pytest-sugar==1.0.0