Copy the tests

Author: dandavison

.github/workflows/build-binaries.yml

@@ -63,6 +63,7 @@ jobs:
           ./.test-venv/bin/pip install 'protobuf>=3.20' 'types-protobuf>=3.20' 'typing-extensions<5,>=4.2.0'
           ./.test-venv/bin/pip install --no-index --find-links=../dist temporalio
           ./.test-venv/bin/pip install pytest
+          cp -r ../tests .
           ./.test-venv/bin/python -m pytest -k tests/test_activity_hello
           cd ..
           rm -r __test_wheel__