fix: convert DAPR_HEALTH_TIMEOUT to float

[KentHsu]

Description

Convert settings.DAPR_HEALTH_TIMEOUT from str to float
Update DaprHealthCheckTests mock so the test can catch this error

Issue reference

Fixes #688 [BUG] DAPR_HEALTH_TIMEOUT as environment variable is not converted to numerical value

Please reference the issue this PR will close: #[#688]

Checklist

Please make sure you've completed the relevant tasks for this PR, out of the following list:

• Code compiles correctly
• Created/updated tests
• Extended the documentation

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 86.28%. Comparing base (fc0e9d1) to head (2243cbe).
Report is 17 commits behind head on main.

❗ Current head 2243cbe differs from pull request most recent head 9ea041a. Consider uploading reports for the commit 9ea041a to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #692      +/-   ##
==========================================
- Coverage   86.37%   86.28%   -0.09%     
==========================================
  Files          79       82       +3     
  Lines        4094     4172      +78     
==========================================
+ Hits         3536     3600      +64     
- Misses        558      572      +14     

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[elena-kolevska]

Let's make this 2.5, so it's more explicit.

Suggested change

	@patch.object(settings, 'DAPR_HEALTH_TIMEOUT', '2')
	@patch.object(settings, 'DAPR_HEALTH_TIMEOUT', '2.5')

[KentHsu]

updated in this commit

[elena-kolevska]

Thanks for the contribution @KentHsu, and for reporting @PhilBug.
This problem is fixed in this PR, but that would make the value an int, not a float.

Just a small nit about updating the test to a float value, so it's more explicit.

[KentHsu]

Thank you for reviewing this PR @elena-kolevska
I update the timeout value to 2.5 and also update the assertion to match this change.
Please let me know if there's anything you think we need to update. Thanks!

[elena-kolevska]

Thanks! LGTM now.