deps: add async_timeout package used in the AlarmCoordinator

[palazzem]

Related Issues

n/a

Proposed Changes:

Includes async_timeout in the dependency list. This dependency is automatically included in Home Assistant, but as this project is a standalone project, this dependency is required.

Testing:

n/a

Extra Notes (optional):

n/a

Checklist

• Related issues and proposed changes are filled
• Tests are defining the correct and expected behavior
• Code is well-documented via docstrings

[coveralls]

Pull Request Test Coverage Report for Build 7276657928

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 95.095%

---

Totals
Change from base Build 7115603691:	0.0%
Covered Lines:	597
Relevant Lines:	629

---

💛 - Coveralls