REVERT ME: Run tests against PostgreSQL 16.

Author: clokep

.ci/scripts/calculate_jobs.py

@@ -59,15 +59,14 @@ def set_output(key: str, value: str):
     }
 ]
 
-if not IS_PR:
-    trial_postgres_tests.append(
-        {
-            "python-version": "3.11",
-            "database": "postgres",
-            "postgres-version": "16",
-            "extras": "all",
-        }
-    )
+trial_postgres_tests.append(
+    {
+        "python-version": "3.11",
+        "database": "postgres",
+        "postgres-version": "16",
+        "extras": "all",
+    }
+)
 
 trial_no_extra_tests = [
     {