Pubnub to 1.0.8

[w1ll1am23]

Description:

Bump pubnubsubhandler to 1.0.8 to fix https://www.reddit.com/r/winkhub/comments/c5p097/status_of_wink_in_home_assistant/

Checklist:

• The code change is tested and works locally.
• Local tests pass with tox. Your PR cannot be merged unless tests pass
• There is no commented out code in this PR.
• I have followed the development checklist

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

• The manifest file has all fields filled out correctly. Update and include derived files by running python3 -m script.hassfest.
• New or updated dependencies have been added to requirements_all.txt by running python3 -m script.gen_requirements_all.