fix dependencies in coverage workflow

.github/workflows/run_tests_suite_coverage.yml

@@ -33,7 +33,7 @@ jobs:
       - name: Set up Coverage
         run: |
           python -m pip install --upgrade pip
-          pip install coverage
+          pip install -r requirements.txt coverage pytest pytest-mock
 
       - name: Run common tests (unittest)
         run: coverage run --parallel-mode -m --omit "*__init__.py" --include "model_compression_toolkit/**/*.py" unittest discover tests/common_tests -v
@@ -46,8 +46,7 @@ jobs:
           python -m venv tf_env
           source tf_env/bin/activate
           python -m pip install --upgrade pip
-          pip install -r requirements.txt
-          pip install tensorflow==2.15.* coverage pytest
+          pip install -r requirements.txt tensorflow==2.15.* coverage pytest pytest-mock
 
       - name: Run TensorFlow testsuite
         run: |
@@ -65,7 +64,7 @@ jobs:
           source torch_env/bin/activate
           python -m pip install --upgrade pip
           pip install -r requirements.txt
-          pip install torch==2.5.* torchvision onnx onnxruntime onnxruntime-extensions coverage pytest
+          pip install torch==2.5.* torchvision onnx onnxruntime onnxruntime-extensions coverage pytest pytest-mock
 
       - name: Run torch testsuite
         run: |