Fix ut yaml.

.github/workflows/unit_tests_on_ray_matrix.yml

@@ -35,7 +35,8 @@ jobs:
             pip install pytest
             pip install -r dev-requirements.txt
             pip install ray==${{ matrix.ray_version }}
-            pip install -r $(grep -ivE "ray" requirements.txt)
+            grep -ivE "ray" requirements.txt > temp_requirement.txt
+            pip install -r temp_requirement.txt
 
     - name: Build and test
       run: |