Disable python tests for Python 3.6 temporarily (#2403)

Disable python tests on Python 3.6 temporarily till we remove numpy dependencies from the tests using them.
Different versions of Python are compatible with different versions of numpy, so we need to remove numpy dependency.

test/py/CMakeLists.txt

@@ -41,7 +41,7 @@ function(add_py_venv_fixture FIXTURE_NAME VIRTUAL_ENV_DIR REQUIREMENTS_FILE)
         set(PYTHON_EXECUTABLE ${PYTHON_${PYTHON_VERSION}_EXECUTABLE})
 
         if(NOT TEST py_${PYTHON_VERSION}_${FIXTURE_NAME}_initialize_env)
-            if (NOT (${FIXTURE_NAME} STREQUAL "onnx" AND ${PYTHON_VERSION} STREQUAL ${PYTHON_VERSION_TO_DISABLE_ONNX}))
+            if (NOT (${PYTHON_VERSION} STREQUAL ${PYTHON_VERSION_TO_DISABLE_ONNX}))
                 add_test(NAME py_${PYTHON_VERSION}_${FIXTURE_NAME}_initialize_env COMMAND ${PYTHON_EXECUTABLE} -m venv ${VIRTUAL_ENV_DIR}/${PYTHON_VERSION} --clear)
                 set_tests_properties(py_${PYTHON_VERSION}_${FIXTURE_NAME}_initialize_env PROPERTIES FIXTURES_SETUP ${FIXTURE_NAME}_${PYTHON_VERSION}_INIT_VENV)
                 set(PYTHON_EXECUTABLE ${VIRTUAL_ENV_DIR}/${PYTHON_VERSION}/bin/python)
@@ -67,7 +67,7 @@ function(add_py_test NAME SCRIPT FIXTURE_NAME VENV_DIR)
         else()
             set(PYTHON_EXECUTABLE ${VENV_DIR}/${PYTHON_VERSION}/bin/python)
         endif()
-        if(NOT (${FIXTURE_NAME} STREQUAL "onnx" AND ${PYTHON_VERSION} STREQUAL ${PYTHON_VERSION_TO_DISABLE_ONNX}))
+        if(NOT ${PYTHON_VERSION} STREQUAL ${PYTHON_VERSION_TO_DISABLE_ONNX})
             add_test(
                 NAME test_py_${PYTHON_VERSION}_${NAME}
                 COMMAND ${ENV_COMMAND} ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/${SCRIPT} ${ARGN})

test/py/requirements-onnx.txt

@@ -26,4 +26,4 @@ onnx==1.14.1
 protobuf==3.20.2
 numpy==1.21.6
 packaging==23.0
-pytest==6.0.1
\ No newline at end of file
+pytest==6.0.1

test/py/requirements.txt

@@ -22,4 +22,4 @@
 # THE SOFTWARE.
 #####################################################################################
 
-numpy==1.19.5
\ No newline at end of file
+numpy==1.21.6