fix: Update GH CI workflow to include migrations

Author: letam

.github/workflows/fly-deploy.yml

@@ -16,3 +16,13 @@ jobs:
       - run: flyctl deploy --remote-only
         env:
           FLY_API_TOKEN: ${{ secrets.FLY_API_TOKEN }}
+  migrate:
+    name: Run migrations
+    runs-on: ubuntu-latest
+    needs: deploy
+    steps:
+      - uses: actions/checkout@v4
+      - uses: superfly/flyctl-actions/setup-flyctl@master
+      - run: flyctl ssh console -C 'python manage.py migrate'
+        env:
+          FLY_API_TOKEN: ${{ secrets.FLY_API_TOKEN }}