Update requests to 2.22.0

[pyup-bot]

This PR updates requests from 2.21.0 to 2.22.0.

Changelog

2.22.0

-------------------

**Dependencies**

- Requests now supports urllib3 v1.25.2.
(note: 1.25.0 and 1.25.1 are incompatible)

**Deprecations**

- Requests has officially stopped support for Python 3.4.

Links

• PyPI: https://pypi.org/project/requests
• Changelog: https://pyup.io/changelogs/requests/
• Homepage: http://python-requests.org

[codecov]

Codecov Report

Merging #120 into master will decrease coverage by 0.05%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #120      +/-   ##
==========================================
- Coverage   81.87%   81.81%   -0.06%     
==========================================
  Files          45       45              
  Lines        1848     1848              
==========================================
- Hits         1513     1512       -1     
- Misses        335      336       +1

Impacted Files	Coverage Δ
honeycomb/servicemanager/base_service.py	58.91% <0%> (-0.78%)	⬇️

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