update codecov action to v2

Author: patinthehat

.github/workflows/run-tests.yml

@@ -1,6 +1,6 @@
 name: run-tests
 
-on: 
+on:
   push:
     branches:
       - main
@@ -38,9 +38,9 @@ jobs:
 
       - name: Execute tests
         run: ./vendor/bin/phpunit --coverage-clover clover.xml -d --without-creating-snapshots
-        
+
       - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@v1
+        uses: codecov/codecov-action@v2
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
           files: clover.xml