Upgrade aiolifx_effects to 0.2.1

[amelchio]

Description:

This should fix Python 3.5 compatibility.

Related issue (if applicable): fixes #17182

Checklist:

• The code change is tested and works locally.
• Local tests pass with tox.

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

• Documentation added/updated in home-assistant.io

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

• New dependencies have been added to the REQUIREMENTS variable (example).
• New dependencies are only imported inside functions that use them (example).
• New or updated dependencies have been added to requirements_all.txt by running script/gen_requirements_all.py.
• New files were added to .coveragerc.