Revert to CodeCov 3 For Now (#64)

# Revert to CodeCov 3 For Now

## ⚙️ Release Notes 
- See codecov/codecov-action#1367 for more
details. Unfortunately we have not received any response from the
codecov team so far; we will investigate other tools and solutions in
the meantime or see if we can somehow contribute to codecov to support
them.


### 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: Paul Schmiedmayer <[email protected]>

.github/workflows/create-and-upload-coverage-report.yml

@@ -44,7 +44,7 @@ jobs:
           xcrun xcresulttool merge ${{ inputs.coveragereports }} --output-path CodeCoverage.xcresult
           rm -rf ${{ inputs.coveragereports }}
     - name: Upload coverage to Codecov
-      uses: codecov/codecov-action@v4
+      uses: codecov/codecov-action@v3
       with:
         fail_ci_if_error: true
         token: ${{ secrets.token }}

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

@@ -34,4 +34,4 @@ jobs:
       - name: Run the tests
         run: npm test
       - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@v4
+        uses: codecov/codecov-action@v3