chore(deps): update dependency requests to v2.25.1

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
requests (source, changelog)	==2.24.0 -> ==2.25.1

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Release Notes

psf/requests

v2.25.1

Compare Source

Bugfixes

• Requests now treats application/json as utf8 by default. Resolving
  inconsistencies between r.text and r.json output. (#​5673)

Dependencies

• Requests now supports chardet v4.x.

v2.25.0

Compare Source

Improvements

• Added support for NETRC environment variable. (#​5643)

Dependencies

• Requests now supports urllib3 v1.26.

Deprecations

• Requests v2.25.x will be the last release series with support for Python 3.5.
• The requests[security] extra is officially deprecated and will be removed
  in Requests v2.26.0.

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