Bump flake8 from 7.0.0 to 7.1.0 in /semantic-conventions

Bumps [flake8](https://github.com/pycqa/flake8) from 7.0.0 to 7.1.0.
- [Commits](PyCQA/flake8@7.0.0...7.1.0)

---
updated-dependencies:
- dependency-name: flake8
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

semantic-conventions/dev-requirements.txt

@@ -1,6 +1,6 @@
 black==24.4.2
 mypy==1.10.0
 pytest==8.2.2
-flake8==7.0.0
+flake8==7.1.0
 pylint==3.2.3
 isort==5.13.2