Bump httplib2 from 0.17.4 to 0.21.0 in /megalist_dataflow

[dependabot[bot]]

Bumps httplib2 from 0.17.4 to 0.21.0.

Changelog

Sourced from httplib2's changelog.

0.21.0

http: Content-Encoding: deflate must accept zlib encapsulation httplib2/httplib2#230

Begin support and CI against CPython 3.10 and 3.11.

0.20.4

proxy: support proxy urls with ipv6 address httplib2/httplib2#217

0.20.3

No changes in library. Tests compatible with Python3.10 and recent pytest.

0.20.2

auth: support pyparsing v3 (AttributeError downcaseTokens) httplib2/httplib2#207

proxy: correct extraction of errno from pysocks ProxyConnectionError httplib2/httplib2#202

0.20.1

No changes from 0.20.0, re-upload of broken py2 wheel.

0.20.0

IMPORTANT cacerts: remove expired DST Root CA X3, add ISRG Root X1, X2 httplib2/httplib2#200 httplib2/httplib2#203

tls: accept min/max ssl.TLSVersion enum values httplib2/httplib2#191

setup(python_requires=...) may need setuptools update httplib2/httplib2#195

0.19.1

auth header parsing performance optimizations; Thanks to Paul McGuire

Use mock from the standard library on Python>=3.3

0.19.0

auth: parse headers using pyparsing instead of regexp httplib2/httplib2#182

... (truncated)

Commits

• 3094c64 v0.21.0 release
• eefcf9e pre-commit, contribution guideline, script/test now creates one virtualenv us...
• 12a76ea internal: simpler recursive _errno_from_exception
• 7984a73 tests: pypy2 does not support ssl.TLSVersion
• 9bee0d9 Content-Encoding: deflate must accept zlib encapsulation
• 992ff25 ssl: PROTOCOL_TLS is deprecated fix
• a309035 docs: fix simple typo, referrring -> referring
• 9d45017 v0.20.4 release
• a22535f Fix parsing http_proxy environment.
• cde9e87 Align comment quotes to conform to the style of the file and help certain IDE...
• Additional commits viewable in compare view

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