Fix GitHub CI timeout issue for link checker (#937)

* Fix GitHub CI timeout issue for link checker

* update problematic links

conftest.py

@@ -0,0 +1,17 @@
+import os
+import requests
+
+
+def pytest_configure(config):
+    if not getattr(config.option, "check_links", False):
+        return
+
+    timeout = float(os.environ.get("CHECK_LINKS_TIMEOUT", "10"))
+    original_request = requests.sessions.Session.request
+
+    def request_with_timeout(self, method, url, **kwargs):
+        if kwargs.get("timeout") is None:
+            kwargs["timeout"] = timeout
+        return original_request(self, method, url, **kwargs)
+
+    requests.sessions.Session.request = request_with_timeout