bugfix: Force poetry lock to fix issue (#4)

* task: Forced poetry lock

* task: Rollback to trigger on push

* task: $GITHUB_ENV no longer needed

.github/workflows/deploy-dev.yml

@@ -32,6 +32,18 @@ jobs:
           AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
           AWS_REGION: ${{ secrets.AWS_REGION }}
 
+      # Install & configure poetry
+      - name: Install Poetry
+        uses: snok/install-poetry@v1
+        with:
+          virtualenvs-create: false
+          virtualenvs-in-project: false
+
+      # Run Poetry lock --no-update
+      - name: Poetry Lock
+        run: |
+          poetry lock --directory backend --no-update
+
       # Create and activate the virtual environment
       - name: Set up Python virtual environment
         run: |