Do not upload coverage results to Codecov when run in a fork

Author: jdblischak

.github/workflows/test-coverage.yaml

@@ -4,6 +4,7 @@ on:
   push:
     branches: [main, master]
   pull_request:
+  workflow_dispatch:
 
 name: test-coverage.yaml
 
@@ -38,6 +39,7 @@ jobs:
         shell: Rscript {0}
 
       - uses: codecov/codecov-action@v4
+        if: github.event.repository.fork == false
         with:
           # Fail if error if not on PR, or if on PR and token is given
           fail_ci_if_error: ${{ github.event_name != 'pull_request' || secrets.CODECOV_TOKEN }}