SNOW-3559506: RequestsDependencyWarning from vendored requests with chardet 7.x / charset-normalizer 3.x

[ctcjab]

Description

snowflake-connector-python 4.5.0 emits a RequestsDependencyWarning at import time because the vendored requests has stale version bounds:

.venv/lib/python3.13/site-packages/snowflake/connector/vendored/requests/__init__.py:113:
  RequestsDependencyWarning: urllib3 (2.6.3) or chardet (7.4.3)/charset_normalizer (3.4.7)
  doesn't match a supported version!

The vendored check_compatibility() requires chardet >= 3.0.2, < 6.0.0, but chardet is now at 7.x. Since chardet is checked before charset_normalizer, the assertion fails even though charset_normalizer 3.4.7 would pass its own check (>= 2.0.0, < 4.0.0).

This is the same root cause as #1188 (closed in 2022 after the bounds were bumped for chardet 5.x).

Environment

• snowflake-connector-python: 4.5.0
• Python: 3.13
• chardet: 7.4.3
• charset_normalizer: 3.4.7
• urllib3: 2.7.0
• OS: Linux (RHEL 9)

Expected behavior

No warning on import when using current versions of chardet and charset_normalizer.

Suggested fix

Update the version bounds in src/snowflake/connector/vendored/requests/__init__.py (check_compatibility), or re-vendor a newer version of requests that has up-to-date bounds.

[sfc-gh-sghosh]

Thank you @ctcjab for raising the issue.

We are able to reproduce it, we will work on bumping the version in the vendored requests/init.py to accept chardet < 8.0.0 (or higher)

[ctcjab]

Thank you, @sfc-gh-sghosh. Have you seen https://iscinumpy.dev/post/bound-version-constraints/? I believe it would be better to stop checking if any dependency version is higher than some upper bound.

[Niivii]

Did a PR for this.