Update dependency coveralls to v2.2.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
coveralls (changelog)	==2.0.0 -> ==2.2.0

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Release Notes

TheKevJames/coveralls-python (coveralls)

v2.2.0

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Features

• api: add workaround allowing job resubmission (#​241) (0de0c019)

Bug Fixes

• integrations: fixup environment detection for Semaphore CI (#​236) (ad4f8fa8)

v2.1.2

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Features

• circleci: support parallel builds (#​233) (5e05654c)
  Note: this is partially a fix for the --finish command
  introduced in v2.1.0, which did not seem to work for some CircleCI
  users.

v2.1.1

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Bug Fixes

• fix unhashable CoverallsException (#​230) (aa55335d)
  This fixes a regression introduced in v2.1.0 which affected (at least) any
  Python 3.5 installations.

v2.1.0

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Features

• cli: add new --finish flag for finalizing parallel builds (#​277) (f597109b)

Bug Fixes

• github: fix Github Actions support (#​227) (f597109b)

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