fixup! py(ci): Move test execution to go-task

Author: cdecker

.github/workflows/check-self.yml

@@ -42,6 +42,7 @@ jobs:
     - name: Check Self
       env:
         GL_TESTING_IGNORE_HASH: 1
-        PATH: /tmp/bin:${{ PATH }}
+        PATH: /tmp/bin:{{ .PATH }}
+        PYTEST_OPTS: -n 6
       run : |
         PYTEST_OPTS='-n 8' task clientpy:check