Update dependency urllib3 to v1.26.12

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
urllib3 (source)	==1.26.5 -> ==1.26.12

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Release Notes

urllib3/urllib3

v1.26.12

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====================

• Deprecated the urllib3[secure] extra and the urllib3.contrib.pyopenssl module.
  Both will be removed in v2.x. See this GitHub issue <https://github.com/urllib3/urllib3/issues/2680>_
  for justification and info on how to migrate.

v1.26.11

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====================

• Fixed an issue where reading more than 2 GiB in a call to HTTPResponse.read would
  raise an OverflowError on Python 3.9 and earlier.

v1.26.10

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====================

• Removed support for Python 3.5
• Fixed an issue where a ProxyError recommending configuring the proxy as HTTP
  instead of HTTPS could appear even when an HTTPS proxy wasn't configured.

v1.26.9

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===================

• Changed urllib3[brotli] extra to favor installing Brotli libraries that are still
  receiving updates like brotli and brotlicffi instead of brotlipy.
  This change does not impact behavior of urllib3, only which dependencies are installed.
• Fixed a socket leaking when HTTPSConnection.connect() raises an exception.
• Fixed server_hostname being forwarded from PoolManager to HTTPConnectionPool
  when requesting an HTTP URL. Should only be forwarded when requesting an HTTPS URL.

v1.26.8

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===================

• 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.

v1.26.7

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===================

• Fixed a bug with HTTPS hostname verification involving IP addresses and lack
  of SNI. (Issue #​2400)
• Fixed a bug where IPv6 braces weren't stripped during certificate hostname
  matching. (Issue #​2240)

v1.26.6

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===================

• Deprecated the urllib3.contrib.ntlmpool module. urllib3 is not able to support
  it properly due to reasons listed in this issue <https://github.com/urllib3/urllib3/issues/2282>_.
  If you are a user of this module please leave a comment.
• Changed HTTPConnection.request_chunked() to not erroneously emit multiple
  Transfer-Encoding headers in the case that one is already specified.
• Fixed typo in deprecation message to recommend Retry.DEFAULT_ALLOWED_METHODS.

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