chore(ci): tests with different postgres versions

Author: danfimov

.github/workflows/code-check.yml

@@ -17,10 +17,11 @@ jobs:
     strategy:
       matrix:
         python-version: [ "3.10", "3.11", "3.12", "3.13", "3.14" ]
+        postgres-version: [ "16", "17", "18" ]
       fail-fast: true
     services:
      postgres:
-       image: postgres:18
+       image: postgres:${{ matrix.postgres-version }}
        env:
          POSTGRES_USER: taskiq_postgres
          POSTGRES_PASSWORD: look_in_vault