Fix: correct YAML indentation for dependency installation

Author: PawanKonwar

.github/workflows/ml_ci.yml

@@ -20,9 +20,9 @@ jobs:
 
       - name: Install dependencies
         run: |
-         python -m pip install --upgrade pip
-         pip install -r requirements.txt
-         pip install -r requirements-dev.txt
+           python -m pip install --upgrade pip
+           pip install -r requirements.txt
+           pip install -r requirements-dev.txt
 
       - name: Lint with flake8
         run: |