Update dependency urllib3 to v1.26.8

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
urllib3 (source)	==1.26.7 -> ==1.26.8

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Release Notes

urllib3/urllib3

### [`v1.26.8`](https://togithub.com/urllib3/urllib3/releases/1.26.8) [Compare Source](https://togithub.com/urllib3/urllib3/compare/1.26.7...1.26.8) **If you or your organization rely on urllib3 consider supporting us via [GitHub Sponsors](https://togithub.com/sponsors/urllib3).** :warning: **urllib3 v2.0 will drop support for Python 2**: [Read more in the v2.0 Roadmap](https://urllib3.readthedocs.io/en/latest/v2-roadmap.html) :warning: **This release will be the last release supporting Python 3.5. Please upgrade to a non-EOL Python version.** - Added extra message to`urllib3.exceptions.ProxyError` when urllib3 detects that a proxy is configured to use HTTPS but the proxy itself appears to only use HTTP. - Added a mention of the size of the connection pool when discarding a connection due to the pool being full. - Added explicit support for Python 3.11. - Deprecated the `Retry.MAX_BACKOFF` class property in favor of `Retry.DEFAULT_MAX_BACKOFF` to better match the rest of the default parameter names. `Retry.MAX_BACKOFF` is removed in v2.0. - Changed location of the vendored `ssl.match_hostname` function from `urllib3.packages.ssl_match_hostname` to `urllib3.util.ssl_match_hostname` to ensure Python 3.10+ compatibility after being repackaged by downstream distributors. - Fixed absolute imports, all imports are now relative.

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[codecov-commenter]

Codecov Report

Merging #14 (4fd810d) into main (62c9456) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##             main      #14   +/-   ##
=======================================
  Coverage   98.71%   98.71%           
=======================================
  Files           3        3           
  Lines         312      312           
=======================================
  Hits          308      308           
  Misses          4        4           

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