Try to get unit tests running

Author: hpelletier

.github/workflows/run_tests.yml

@@ -17,7 +17,7 @@ jobs:
       - uses: php-actions/composer@v6
 
       - name: Run Tests
-        uses: php-actions/phpunit@v3
+        uses: vendor/bin/phpunit
         env:
           LOB_API_TEST_KEY: ${{ secrets.LOB_API_TEST_KEY }}
           LOB_API_LIVE_KEY: ${{ secrets.LOB_API_LIVE_KEY }}