Use poetry to install dependencies

Author: okorach-sonar

.github/workflows/build.yml

@@ -28,8 +28,8 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
-          if [ -f requirements-to-build.txt ]; then pip install -r requirements-to-build.txt; fi
+          python -m pip install poetry
+          poetry install
         # Linting is done in the run_linters.sh script
 
       - name: Prep tests