[Security] Bump urllib3 from 1.25.7 to 1.25.11

[dependabot-preview]

Bumps urllib3 from 1.25.7 to 1.25.11.

Release notes

Sourced from urllib3's releases.

1.25.10

Release: 1.25.10

1.25.9

No release notes provided.

1.25.8

Release: 1.25.8

Changelog

Sourced from urllib3's changelog.

1.25.11 (2020-10-19)

• Fix retry backoff time parsed from Retry-After header when given in the HTTP date format. The HTTP date was parsed as the local timezone rather than accounting for the timezone in the HTTP date (typically UTC) (Pull #1932, Pull #1935, Pull #1938, Pull #1949)
• Fix issue where an error would be raised when the SSLKEYLOGFILE environment variable was set to the empty string. Now SSLContext.keylog_file is not set in this situation (Pull #2016)

1.25.10 (2020-07-22)

• Added support for SSLKEYLOGFILE environment variable for logging TLS session keys with use with programs like Wireshark for decrypting captured web traffic (Pull #1867)
• Fixed loading of SecureTransport libraries on macOS Big Sur due to the new dynamic linker cache (Pull #1905)
• Collapse chunked request bodies data and framing into one call to send() to reduce the number of TCP packets by 2-4x (Pull #1906)
• Don't insert None into ConnectionPool if the pool was empty when requesting a connection (Pull #1866)
• Avoid hasattr call in BrotliDecoder.decompress() (Pull #1858)

1.25.9 (2020-04-16)

• Added InvalidProxyConfigurationWarning which is raised when erroneously specifying an HTTPS proxy URL. urllib3 doesn't currently support connecting to HTTPS proxies but will soon be able to and we would like users to migrate properly without much breakage.

  See this GitHub issue for more information on how to fix your proxy config. (Pull #1851)

• Drain connection after PoolManager redirect (Pull #1817)

• Ensure load_verify_locations raises SSLError for all backends (Pull #1812)

• Rename VerifiedHTTPSConnection to HTTPSConnection (Pull #1805)

• Allow the CA certificate data to be passed as a string (Pull #1804)

• Raise ValueError if method contains control characters (Pull #1800)

• Add __repr__ to Timeout (Pull #1795)

1.25.8 (2020-01-20)

• Drop support for EOL Python 3.4 (Pull #1774)
• Optimize _encode_invalid_chars (Pull #1787)

Commits

• 9b95f29 Release: 1.25.11
• 37664c9 [1.25] Upgrade pytest-freezegun to 0.4.2
• 85a809c [1.25] Parse UTC for 'Retry-After' redirect handler
• 785b901 [1.25] Always assume UTC if no timezone in Retry-After
• 9a2c158 [1.25] Use tz-aware functions in Retry.parse_retry_after()
• 747e9aa [1.25.x] Don't set keylog_filename for empty values
• 9c54745 [1.25] Black 20.8b1 styling
• 06fff01 [1.25] Check README.rst and CHANGES.rst are valid reST
• 957edcc [1.25] Remove raw reST directive from README
• 15487c7 [1.25] Migrate Windows CI to GitHub Actions
• Additional commits viewable in compare view

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[dependabot-preview]

We've just been alerted that this update fixes a security vulnerability:

Sourced from The GitHub Security Advisory Database.

Uncontrolled Resource Consumption in urllib3

The _encode_invalid_chars function in util/url.py in the urllib3 library 1.25.2 through 1.25.7 for Python allows a denial of service (CPU consumption) because of an inefficient algorithm. The percent_encodings array contains all matches of percent encodings. It is not deduplicated. For a URL of length N, the size of percent_encodings may be up to O(N). The next step (normalize existing percent-encoded bytes) also takes up to O(N) for each step, so the total time is O(N^2). If percent_encodings were deduplicated, the time to compute _encode_invalid_chars would be O(kN), where k is at most 484 ((10+6*2)^2).

Affected versions: [">= 1.25.2, <= 1.25.7"]