Bump python version used in test workflow

Author: MatteoPologruto

.github/workflows/test-go-integration-task.yml

@@ -5,7 +5,7 @@ env:
   # See: https://github.com/actions/setup-go/tree/v2#readme
   GO_VERSION: "1.21"
   # See: https://github.com/actions/setup-python/tree/v2#available-versions-of-python
-  PYTHON_VERSION: "3.9"
+  PYTHON_VERSION: "3.10"
 
 # See: https://docs.github.com/en/free-pro-team@latest/actions/reference/events-that-trigger-workflows
 on: