Bump pyserial-asyncio to version 0.6 release as contain fix for Windows OS

[Hedda]

The problem

This needs testing to confirm first, but FIY:

pyserial-asyncio version 0.6 has now finally been released with a fix for Windows OS:

https://github.com/pyserial/pyserial-asyncio/releases/tag/v0.6

Includes "fix multiple writers race on windows"

pyserial/pyserial-asyncio#70

Which solves "Never transmits on Windows in version 0.5"

pyserial/pyserial-asyncio#69

The backstory is pyserial-asyncio version 0.5 was broken/blacklisted on Windows OS.

What is version of Home Assistant Core has the issue?

2021.4

What was the last working version of Home Assistant Core?

No response

What type of installation are you running?

Home Assistant Core

Integration causing the issue

zha

Link to integration documentation on our website

https://www.home-assistant.io/integrations/zha/

Example YAML snippet

No response

Anything in the logs that might be useful for us?

No response

Additional information

No response

[probot-home-assistant]

Hey there @dmulcahey, @Adminiuga, mind taking a look at this issue as it has been labeled with an integration (zha) you are listed as a code owner for? Thanks!
_{^{(message by CodeOwnersMention)}}

---

zha documentation
zha source
_{^{(message by IssueLinks)}}

[frenck]

While a bump in general is nice, running Home Assistant directly on Windows isn't supported by this project; therefore, this is not an issue for this project.