[Security] Bump urllib3 from 1.22 to 1.24.1

[dependabot-preview]

Bumps urllib3 from 1.22 to 1.24.1. This update includes security fixes.

Vulnerabilities fixed

Sourced from The GitHub Security Advisory Database.

High severity vulnerability that affects urllib3
urllib3 before version 1.23 does not remove the Authorization HTTP header when following a cross-origin redirect (i.e., a redirect that differs in host, port, or scheme). This can allow for credentials in the Authorization header to be exposed to unintended hosts or transmitted in cleartext.

Affected versions: < 1.23

Changelog

Sourced from urllib3's changelog.

1.24.1 (2018-11-02)

• Remove quadratic behavior within GzipDecoder.decompress() (Issue #1467)

• Restored functionality of ciphers parameter for create_urllib3_context(). (Issue #1462)

1.24 (2018-10-16)

• Allow key_server_hostname to be specified when initializing a PoolManager to allow custom SNI to be overridden. (Pull #1449)

• Test against Python 3.7 on AppVeyor. (Pull #1453)

• Early-out ipv6 checks when running on App Engine. (Pull #1450)

• Change ambiguous description of backoff_factor (Pull #1436)

• Add ability to handle multiple Content-Encodings (Issue #1441 and Pull #1442)

• Skip DNS names that can't be idna-decoded when using pyOpenSSL (Issue #1405).

• Add a server_hostname parameter to HTTPSConnection which allows for
  overriding the SNI hostname sent in the handshake. (Pull #1397)

• Drop support for EOL Python 2.6 (Pull #1429 and Pull #1430)

• Fixed bug where responses with header Content-Type: message/* erroneously
  raised HeaderParsingError, resulting in a warning being logged. (Pull #1439)

• Move urllib3 to src/urllib3 (Pull #1409)

1.23 (2018-06-04)

• Allow providing a list of headers to strip from requests when redirecting
  to a different host. Defaults to the Authorization header. Different
  headers can be set via Retry.remove_headers_on_redirect. (Issue #1316)

• Fix util.selectors._fileobj_to_fd to accept long (Issue #1247).

• Dropped Python 3.3 support. (Pull #1242)

• Put the connection back in the pool when calling stream() or read_chunked() on
  a chunked HEAD response. (Issue #1234)

• Fixed pyOpenSSL-specific ssl client authentication issue when clients
  attempted to auth via certificate + chain (Issue #1060)

... (truncated)

Commits

• a6ec68a Merging new release version: 1.24.1
• 0cedb3b Restore context.set_ciphers() to create_urllib3_context() (#1463)
• 0aeba3b Use bytearray to accumulate bytes from gzip (#1468)
• f8d1c78 Uninstall oclint to ensure gcc can be brew upgraded (#1464)
• cd7cfa6 Resolve pytest pluggy version conflict (#1457)
• b548abc Update changelog for 1.24 release
• ef0c745 Merging new release version: 1.24
• a0964d9 Add missing key_server_hostname variable (#1449)
• 34d8298 Test against Python 3.7 on AppVeyor (#1453)
• 977c9ff Early-out ipv6 checks when running on App Engine (#1450)
• Additional commits viewable in compare view

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[coveralls]

Coverage remained the same at 20.294% when pulling ab81feb on dependabot/pip/develop/urllib3-1.24.1 into 2097aac on develop.

[dependabot-preview]

Looks like urllib3 is no longer a dependency, so this is no longer needed.