Ignore `dandiset.yaml`

[jwodder]

Closes #36.

[codecov[bot]]

Codecov Report

Base: 66.66% // Head: 66.52% // Decreases project coverage by -0.15% :warning:

Coverage data is based on head (cc65d7c) compared to base (fcac22f). Patch coverage: 0.00% of modified lines in pull request are covered.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #37 +/- ## ========================================== - Coverage 66.66% 66.52% -0.15% ========================================== Files 7 7 Lines 456 457 +1 Branches 105 106 +1 ========================================== Hits 304 304 - Misses 134 135 +1 Partials 18 18 ``` | [Impacted Files](https://codecov.io/gh/dandi/dandisets-healthstatus/pull/37?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=dandi) | Coverage Δ | | |---|---|---| | [code/src/healthstatus/checker.py](https://codecov.io/gh/dandi/dandisets-healthstatus/pull/37?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=dandi#diff-Y29kZS9zcmMvaGVhbHRoc3RhdHVzL2NoZWNrZXIucHk=) | `45.59% <0.00%> (-0.24%)` | :arrow_down: | Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=dandi). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=dandi)

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[yarikoptic]

thanks!