ci: fix composer script name and bump codecov/codecov-action

Author: williamdes

.github/workflows/tests.yml

@@ -35,6 +35,6 @@ jobs:
             - name: Install dependencies
               run: composer install --no-interaction ${{ matrix.composer-options }}
             - name: Run php tests
-              run: composer run phpunit
+              run: composer run test
             - name: Send coverage
-              uses: codecov/codecov-action@v1
+              uses: codecov/codecov-action@v3