Limit CI examples to Python 3.13 only (#299)

Reduce CI job count by only running examples on Python 3.13 instead of
all Python versions (3.10-3.13). This reduces the combinatorial
explosion while still ensuring examples work on the latest Python
version.

Co-authored-by: Claude <[email protected]>

Author: ashwin-ant

.github/workflows/test.yml

@@ -86,7 +86,7 @@ jobs:
     needs: test-e2e # Run after e2e tests
     strategy:
       matrix:
-        python-version: ["3.10", "3.11", "3.12", "3.13"]
+        python-version: ["3.13"]
 
     steps:
       - uses: actions/checkout@v4