Fixed Codecov integration and moved into a new step

.github/workflows/pr-code-coverage.yml

@@ -17,6 +17,8 @@ jobs:
     steps:
       - name: Checkout code
         uses: actions/checkout@v2
+        with:
+          fetch-depth: 100
 
       - name: Setup PHP
         uses: shivammathur/setup-php@v2
@@ -48,5 +50,8 @@ jobs:
       - name: Run unit tests with code coverage. Allow to fail.
         run: |
           RUN_CODE_COVERAGE=1 bash ./tests/bin/phpunit.sh
-          bash <(curl -s https://codecov.io/bash)
           exit 0
+      
+      - name: Send code coverage to Codecov.
+        run: |
+          bash <(curl -s https://codecov.io/bash)