Use valid syntax

Author: DifferentialOrange

.github/workflows/testing.yml

@@ -179,12 +179,17 @@ jobs:
           curl -L https://tarantool.io/pre-release/2/installer.sh | sudo bash
           sudo apt install -y tarantool tarantool-dev
           TNT_PID=$(tarantool ./test/suites/lib/tarantool_python_ci.lua > tarantool.log 2>&1 & echo $!)
-          echo "::save-state name=TNT_PID::$TNT_PID"
-        post-if: process.env.STATE_TNT_PID != ''
-        post: kill $STATE_TNT_PID
+          echo "::set-env name=TNT_PID::$TNT_PID"
 
       - name: Run tests
         env:
           REMOTE_TARANTOOL_HOST: localhost
           REMOTE_TARANTOOL_CONSOLE_PORT: 3302
         run: make test
+
+      - name: Stop test Tarantool
+        if: ${{ always() }} && process.env.TNT_PID != ''
+        shell: wsl-bash_Ubuntu-20.04 {0}
+        run: kill $TNT_PID
+
+