Update dependency requests to v2.27.1

This MR contains the following updates:

Package	Type	Update	Change
requests (source, changelog)	ironbank-pypi	patch	2.27.0 -> 2.27.1

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Release Notes

psf/requests

v2.27.1

Compare Source

Bugfixes

• Fixed parsing issue that resulted in the auth component being dropped from proxy URLs. (#​6028)

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