add folder to path

Author: patapenka-alexey

.github/workflows/packing.yml

@@ -550,10 +550,8 @@ jobs:
       - name: Run tests
         run: |
           . .venv/bin/activate
-          apt install -y `pwd`/deb_dist/python3-tarantool_*.deb
+          export PYTHONPATH="$PYTHONPATH:."
           make test-pure-install
-        env:
-          DEBIAN_FRONTEND: noninteractive
         if: matrix.target.dist == 'bookworm' || matrix.target.dist == 'noble'
 
   publish_deb: