Bump the pip-updates group with 2 updates

Bumps the pip-updates group with 2 updates: [gaphor](https://github.com/gaphor/gaphor) and [pytest](https://github.com/pytest-dev/pytest).


Updates `gaphor` from 2.27.0 to 3.1.0
- [Release notes](https://github.com/gaphor/gaphor/releases)
- [Changelog](https://github.com/gaphor/gaphor/blob/main/CHANGELOG.md)
- [Commits](gaphor/gaphor@2.27.0...3.1.0)

Updates `pytest` from 8.3.4 to 8.4.1
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@8.3.4...8.4.1)

---
updated-dependencies:
- dependency-name: gaphor
  dependency-version: 3.1.0
  dependency-type: direct:development
  update-type: version-update:semver-major
  dependency-group: pip-updates
- dependency-name: pytest
  dependency-version: 8.4.1
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: pip-updates
...

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

Author: dependabot[bot]