updated locidex pytest workflow with blast and mafft dependencies

.github/workflows/locidex-ci-pytest-workflow.yaml

@@ -25,7 +25,6 @@ jobs:
         python-version: "3.10"
     - name: Install dependencies
       run: |
-        apt-get update -y
         apt-get install blast mafft
         python -m pip install --upgrade pip
         pip install flake8 pytest