chore(deps-dev): bump the gha group across 1 directory with 3 updates

Bumps the gha group with 3 updates in the /packages/opentelemetry-instrumentation-anthropic directory: [flake8](https://github.com/pycqa/flake8), [anthropic](https://github.com/anthropics/anthropic-sdk-python) and [pytest-asyncio](https://github.com/pytest-dev/pytest-asyncio).


Updates `flake8` from 7.0.0 to 7.1.1
- [Commits](PyCQA/flake8@7.0.0...7.1.1)

Updates `anthropic` from 0.36.2 to 0.39.0
- [Release notes](https://github.com/anthropics/anthropic-sdk-python/releases)
- [Changelog](https://github.com/anthropics/anthropic-sdk-python/blob/main/CHANGELOG.md)
- [Commits](anthropics/anthropic-sdk-python@v0.36.2...v0.39.0)

Updates `pytest-asyncio` from 0.23.8 to 0.24.0
- [Release notes](https://github.com/pytest-dev/pytest-asyncio/releases)
- [Commits](pytest-dev/pytest-asyncio@v0.23.8...v0.24.0)

---
updated-dependencies:
- dependency-name: flake8
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: gha
- dependency-name: anthropic
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: gha
- dependency-name: pytest-asyncio
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: gha
...

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