Bump requests from 2.26.0 to 2.27.0 in /tests (#137)

* Bump requests from 2.26.0 to 2.27.0 in /tests

Bumps [requests](https://github.com/psf/requests) from 2.26.0 to 2.27.0.
- [Release notes](https://github.com/psf/requests/releases)
- [Changelog](https://github.com/psf/requests/blob/main/HISTORY.md)
- [Commits](psf/requests@v2.26.0...v2.27.0)

---
updated-dependencies:
- dependency-name: requests
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

* Add comment to dockerfile

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Han Qiao <qiao@basis-ai.com>
Co-authored-by: Han Qiao <qiao.han@aicadium.ai>

Dockerfile

@@ -1,3 +1,4 @@
+# torchvision requires python 3.9 https://pypi.org/project/torchvision/
 ARG BASE=python:3.9
 FROM ${BASE}
 

tests/requirements.txt

@@ -1,2 +1,2 @@
-requests==2.26.0
+requests==2.27.0
 pytest==6.2.5