Relax idna pin from ==3.7 to >=3.7 (#504)

* Relax idna pin from ==3.7 to >=3.7

idna is a transitive dependency (via requests) and is not imported
anywhere in the SDK; the exact pin existed only to enforce the
CVE-2024-3651 security floor (fixed in idna 3.7, added by Dependabot).

The exact `==3.7` propagates to every package that installs `roboflow`
and forces the resolver to backtrack when a sibling dependency (e.g.
google-cloud) needs a newer idna — this is the root cause worked around
in roboflow-queues#121. Relaxing to `>=3.7` keeps the security floor
while letting the resolver pick a compatible newer idna (requests caps
it at <4). Matches requirements-slim.txt, which already leaves idna
unpinned.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

* bump version

---------

Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>

Author: iurisilvio

requirements.txt

@@ -1,5 +1,5 @@
 certifi
-idna==3.7
+idna>=3.7
 cycler
 kiwisolver>=1.3.1
 matplotlib

roboflow/__init__.py

@@ -21,7 +21,7 @@
     CLIPModel = None  # type: ignore[assignment,misc]
     GazeModel = None  # type: ignore[assignment,misc]
 
-__version__ = "1.3.11"
+__version__ = "1.3.12"
 
 
 def check_key(api_key, model, notebook, num_retries=0):