Revert a testing commit from #13812

It (4f5d492cd6a9438de03d1b768f4c220cb662ac06) should have been reverted before the merge to develop.

.ci/scripts/calculate_jobs.py

@@ -33,7 +33,7 @@ IS_PR = os.environ["GITHUB_REF"].startswith("refs/pull/")
 
 trial_sqlite_tests = [
     {
-        "python-version": "3.11",
+        "python-version": "3.7",
         "database": "sqlite",
         "extras": "all",
     }
@@ -52,7 +52,7 @@ if not IS_PR:
 
 trial_postgres_tests = [
     {
-        "python-version": "3.11",
+        "python-version": "3.7",
         "database": "postgres",
         "postgres-version": "10",
         "extras": "all",
@@ -71,7 +71,7 @@ if not IS_PR:
 
 trial_no_extra_tests = [
     {
-        "python-version": "3.11",
+        "python-version": "3.7",
         "database": "sqlite",
         "extras": "",
     }