ci: fix Apify workflows integration tests reference

Author: vdusek

.github/workflows/run_code_checks.yaml

@@ -26,5 +26,5 @@ jobs:
   integration_tests:
     name: Integration tests
     needs: [lint_check, type_check, unit_tests]
-    uses: apify/workflows/.github/workflows/python_integration_tests.yaml@fix-integration-tests-from-forks
+    uses: apify/workflows/.github/workflows/python_integration_tests.yaml@main
     secrets: inherit