Update eslint.yml with contents read permissions for private reposito… (

#66)

# Update eslint action permissions

## ♻️ Current situation & Problem
For private repositories, the eslint action currently does not work as
`contents: read` permissions are required for this.

### Code of Conduct & Contributing Guidelines 

By submitting creating this pull request, you agree to follow our [Code
of
Conduct](https://github.com/StanfordBDHG/.github/blob/main/CODE_OF_CONDUCT.md)
and [Contributing
Guidelines](https://github.com/StanfordBDHG/.github/blob/main/CONTRIBUTING.md):
- [x] I agree to follow the [Code of
Conduct](https://github.com/StanfordBDHG/.github/blob/main/CODE_OF_CONDUCT.md)
and [Contributing
Guidelines](https://github.com/StanfordBDHG/.github/blob/main/CONTRIBUTING.md).

Signed-off-by: Nikolai Madlener <[email protected]>

.github/workflows/eslint.yml

@@ -19,6 +19,7 @@ on:
 
 permissions:
   checks: write
+  contents: read
 
 jobs:
   eslint: