switch.tplink: bump pyhs100 version requirement

[rytilahti]

Description:

pyhs100 depends on future package for py2 support, which was not explicitly stated in the setup.py causing problems with users on such setups where it was not installed as a dependency for other components. The new upstream release fixes this by requiring the installation of future.

Related issue (if applicable): fixes #

Pull request in home-assistant.github.io with documentation (if applicable): home-assistant/home-assistant.github.io#<home-assistant.github.io PR number goes here>

Example entry for configuration.yaml (if applicable):

Checklist:

If user exposed functionality or configuration variables are added/changed:

• Documentation added/updated in home-assistant.github.io

If the code communicates with devices, web services, or third-party tools:

• Local tests with tox run successfully. Your PR cannot be merged unless tests pass
• New dependencies have been added to the REQUIREMENTS variable (example).
• New dependencies are only imported inside functions that use them (example).
• New dependencies have been added to requirements_all.txt by running script/gen_requirements_all.py.
• New files were added to .coveragerc.

If the code does not interact with devices:

• Local tests with tox run successfully. Your PR cannot be merged unless tests pass
• Tests have been added to verify that the new code works.

[mention-bot]

@rytilahti, thanks for your PR! By analyzing the history of the files in this pull request, we identified @kirichkov, @balloob and @fabaff to be potential reviewers.