Fixed #616 Check if SIGALRM is available

[smoy]

What changed?

• Describe the change in high level terms.

Rationale

• Explain the rationale behind this change and the approach.

How was it tested?

If it was manually verified, list the instructions for your reviewers to follow.

• [ ] Unit Tests
• [ ] Functional Tests
• [x] Manually Verified

[castrapel]

Not sure why this is failing black on pre-commit. I couldn't reproduce the lint failure locally.

[codecov[bot]]

Codecov Report

Patch coverage has no change and project coverage change: -0.01% :warning:

Comparison is base (277e560) 82.98% compared to head (428e654) 82.97%. Report is 1 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #618 +/- ## ========================================== - Coverage 82.98% 82.97% -0.01% ========================================== Files 105 105 Lines 12587 12588 +1 ========================================== Hits 10445 10445 - Misses 2142 2143 +1 ``` | [Flag](https://app.codecov.io/gh/noqdev/iambic/pull/618/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=noqdev) | Coverage Δ | | |---|---|---| | [functional_tests](https://app.codecov.io/gh/noqdev/iambic/pull/618/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=noqdev) | `66.18% <0.00%> (+0.19%)` | :arrow_up: | | [functional_tests_config_discovery](https://app.codecov.io/gh/noqdev/iambic/pull/618/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=noqdev) | `45.95% <0.00%> (+0.15%)` | :arrow_up: | | [unit_tests](https://app.codecov.io/gh/noqdev/iambic/pull/618/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=noqdev) | `73.22% <0.00%> (-0.01%)` | :arrow_down: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=noqdev#carryforward-flags-in-the-pull-request-comment) to find out more. | [Files Changed](https://app.codecov.io/gh/noqdev/iambic/pull/618?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=noqdev) | Coverage Δ | | |---|---|---| | [iambic/core/exceptions.py](https://app.codecov.io/gh/noqdev/iambic/pull/618?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=noqdev#diff-aWFtYmljL2NvcmUvZXhjZXB0aW9ucy5weQ==) | `29.19% <0.00%> (-0.19%)` | :arrow_down: |

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