total_seconds() instead of seconds

[RoiTabach]

No description provided.

[linear]

ELE-692 Alert Suppression: support more than 24 hours

Describe the problem
As an Elementary user, I want alerts to be suppressed for more than 24 hours.

Describe the solution
When calculating the diff between current timestamp and last alert run, don't just take the ().seconds part but the entire timestamp diff.

Describe the tests of the solution
I think it's enough to manually test that it's working since it's such a small change

Describe the documentation
Remove the line in the Docs that says that only 0-24 hours are suppported. https://docs.elementary-data.com/quickstart/send-slack-alerts

Additional context
Jocelyn told me she wants to suppress volume anomalies for 48 hours since they have 2 days with peak sales. She just put 24h there. Norm Warren sent in support an example where he tried to suppress for 72 hours.

Reviewer
Idan has the most context

[github-actions]

👋 @RoiTabach
Thank you for raising your pull request.
Please make sure to add tests and document all user-facing changes.
You can do this by editing the docs files in this pull request.

[RoiTabach]

Docs changes:
Before:

After:

[RoiTabach]

Expand the unit test on get_suppressed_alerts , have all the examples be 24 hours.

[RoiTabach]

.

[IDoneShaveIt]

LGTM!