fix datasets fsspec req and update example allowed warns

Author: speediedan

requirements/examples.txt

@@ -6,3 +6,4 @@ sentencepiece
 tensorboardX>=2.2
 tabulate
 psutil
+fsspec[http]<=2025.3.0  # pin for now to avoid https://github.com/huggingface/datasets/issues/7588

tests/helpers/expected_warns.py

@@ -77,6 +77,7 @@ def extend_warns(base_warns, additional_warns):
 
 # Example warnings
 EXAMPLE_BASE_WARNS = [
+    "Using the current device set by the user",  # required starting with PT 2.7
     "sentencepiece tokenizer that you are converting",
     "co_lnotab is deprecated, use co_lines instead.",
     #"`resume_download` is deprecated",