avoid installing our own wheels during build verification

Author: leofang

.github/actions/build/action.yml

@@ -26,7 +26,7 @@ runs:
         CIBW_BUILD: ${{ env.CIBW_BUILD }}
         CIBW_ARCHS_LINUX: "native"
         CIBW_BUILD_VERBOSITY: 1
-        CIBW_TEST_REQUIRES: twine
+        CIBW_BEFORE_TEST: pip install twine
         CIBW_TEST_COMMAND: twine check ${{ env.CUDA_CORE_ARTIFACTS_DIR }}/*.whl
         # # ensure Python.h & co can be found
         # CIBW_BEFORE_BUILD_WINDOWS: >
@@ -65,7 +65,7 @@ runs:
           PARALLEL_LEVEL=${{ env.PARALLEL_LEVEL }}
         CIBW_ENVIRONMENT_WINDOWS: >
           CUDA_HOME="$(cygpath -w $(realpath ./cuda_toolkit))"
-        CIBW_TEST_REQUIRES: twine
+        CIBW_BEFORE_TEST: pip install twine
         CIBW_TEST_COMMAND: twine check ${{ env.CUDA_BINDINGS_ARTIFACTS_DIR }}/*.whl
         #  PARALLEL_LEVEL=${{ env.PARALLEL_LEVEL }}
         # # ensure Python.h & co can be found