CI: pass tests path to pytest so --runtime option registers

The --runtime option is added by tests/conftest.py via pytest_addoption.
pytest parses command-line options using only the initial conftests
(rootdir + path args) before testpaths is applied, and the repo root has
no conftest.py. Running bare `pytest --runtime netcore` therefore failed
with "unrecognized arguments: --runtime".

Pass the tests path explicitly so tests/conftest.py is loaded as an initial
conftest and the option is registered before argument parsing. Apply to
main.yml and both ARM.yml pytest steps.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: jhonabreul

.github/workflows/ARM.yml

@@ -42,10 +42,10 @@ jobs:
         run: dotnet test --logger "console;verbosity=detailed" src/embed_tests/
 
       - name: Python Tests (Mono)
-        run: python -m pytest --runtime mono
+        run: python -m pytest --runtime mono tests
 
       - name: Python Tests (.NET Core)
-        run: python -m pytest --runtime netcore
+        run: python -m pytest --runtime netcore tests
 
       - name: Python tests run from .NET
         run: dotnet test src/python_tests_runner/

.github/workflows/main.yml

@@ -71,7 +71,7 @@ jobs:
       # exercised from Python.
       - name: Python Tests (.NET Core)
         if: ${{ matrix.platform == 'x64' }}
-        run: pytest --runtime netcore
+        run: pytest --runtime netcore tests
 
       - name: Python tests run from .NET
         run: dotnet test --runtime any-${{ matrix.platform }} src/python_tests_runner/