Add Codecov Token to NPM Test Action (#68)

# Add Codecov Token to NPM Test Action

## ⚙️ Release Notes 
- Add Codecov Token to NPM Test Action


### 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).

.github/workflows/npm-test-and-coverage.yml

@@ -16,6 +16,10 @@ on:
         required: false
         type: string
         default: '18'
+    secrets:
+      token:
+        description: 'The CodeCov token used for private repositories'
+        required: false
 
 jobs:
   testandcoverage:
@@ -35,3 +39,5 @@ jobs:
         run: npm test
       - name: Upload coverage to Codecov
         uses: codecov/codecov-action@v3
+        with:
+          token: ${{ secrets.token }}