Update httplib2 to 0.10.3

[pyup-bot]

There's a new version of httplib2 available.
You are currently using 0.9. I have updated it to 0.10.3

These links might come in handy: PyPI | Changelog | Repo

Changelog

0.10.3

Fix certificate validation on Python<=2.7.8 without ssl.CertificateError
httplib2/httplib2#45

0.10.2

Just a reupload of 0.10.1, which was broken for Python3
because wheel distribution doesn't play well with our 2/3 split code base.
httplib2/httplib2#43

0.10.1

This is the first release by new httplib2 team. See post by Joe
https://bitworking.org/news/2016/03/an_update_on_httplib2

Remove VeriSign Class 3 CA from trusted certs
https://googleonlinesecurity.blogspot.com/2015/12/proactive-measures-in-digital.html

Add IdenTrust DST Root CA X3
httplib2/httplib2#26

Support for specifying the SSL protocol version (Python v2)
https://github.com/jcgregorio/httplib2/issues/329

On App Engine use urlfetch's default deadline if None is passed.

Fix TypeError on AppEngine “init() got an unexpected keyword argument 'ssl_version’”
httplib2/httplib2#12

Send SNI data for SSL connections on Python 2.7.9+
Verify the server hostname if certificate validation is enabled
httplib2/httplib2#13

Add proxy_headers argument to ProxyInfo constructor
httplib2/httplib2#21

Make disable_ssl_certificate_validation work with Python 3.5.
httplib2/httplib2#15

Fix socket error handling
httplib2/httplib2@eb74685
httplib2/httplib2@e7f6e62

0.9.2

Fixes in this release:

jcgregorio/httplib2#313

Fix incorrect ResponseNotReady exceptions, retry on transient errors.

0.9.1

Fixes in this release:

jcgregorio/httplib2#296

   There was a problem with headers when a binary string is passed (like
   b'Authorization').

jcgregorio/httplib2#276

   Default to doing DNS resolution through a proxy server if present.

Got merge conflicts? Close this PR and delete the branch. I'll create a new PR for you.

Happy merging! 🤖