backoff deprecation warning

[sgrava]

Importing pulser-pasqal on python 3.14 raises the warning:

Python 3.14.2 (main, Feb  5 2026, 11:14:05) [GCC 11.4.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import pulser_pasqal
/.venv/lib/python3.14/site-packages/backoff/_decorator.py:201: DeprecationWarning: 'asyncio.iscoroutinefunction' is deprecated and slated for removal in Python 3.16; use inspect.iscoroutinefunction() instead
  if asyncio.iscoroutinefunction(target):
/.venv/lib/python3.14/site-packages/backoff/_decorator.py:201: DeprecationWarning: 'asyncio.iscoroutinefunction' is deprecated and slated for removal in Python 3.16; use inspect.iscoroutinefunction() instead
  if asyncio.iscoroutinefunction(target):
/.venv/lib/python3.14/site-packages/backoff/_decorator.py:201: DeprecationWarning: 'asyncio.iscoroutinefunction' is deprecated and slated for removal in Python 3.16; use inspect.iscoroutinefunction() instead
  if asyncio.iscoroutinefunction(target):

It seems also that the backoff library is not maintained any more.

[AurelienNober]

Thx @sgrava we'll need to a pass on all the issues and plan future versions properly.