Update CI testing workflow dependencies.

Author: oj-tooth

.github/workflows/ci_tests.yml

@@ -22,7 +22,7 @@ jobs:
       - name: 📦 Install dependencies
         run: |
           python -m pip install --upgrade pip
-          pip install -r requirements.txt
+          pip install pytest pytest-mock
           pip install git+https://github.com/NOC-MSM/OceanDataStore.git
 
       - name: 🧪 Run Pytest