fix test pytest version

Author: echarlaix

.github/workflows/test_inc_examples.yml

@@ -35,7 +35,7 @@ jobs:
 
     - name: Install dependencies
       run: |
-        pip install optimum[neural-compressor] pytest
+        pip install optimum[neural-compressor] pytest==8.0.0
         pip install -r examples/neural_compressor/text-classification/requirements.txt
         pip install -r examples/neural_compressor/question-answering/requirements.txt
         pip install -r examples/neural_compressor/token-classification/requirements.txt