requirements: Update sqlalchemy to 1.2.4.

This requires updating one of the tests for the group_pm_with feature
in test_narrow to use the new style of tautology generated by SQLAlchemy.

Thanks to Sinwar for investigating this.

Fixes #8381.

requirements/common.in

@@ -23,7 +23,7 @@ ipython==6.2.1
 Pillow==5.0.0
 
 # Needed for building complex DB queries
-SQLAlchemy==1.1.14
+SQLAlchemy==1.2.4
 
 # Needed for password hashing
 argon2-cffi==18.1.0

requirements/dev.txt

@@ -158,7 +158,7 @@ sourcemap==0.2.1
 sphinx-rtd-theme==0.2.4
 sphinx==1.7.0
 sphinxcontrib-websupport==1.0.1  # via sphinx
-sqlalchemy==1.1.14
+sqlalchemy==1.2.4
 statsd==3.2.1             # via django-statsd-mozilla
 stripe==1.77.2
 tblib==1.3.2

requirements/prod.txt

@@ -108,7 +108,7 @@ social-auth-app-django==2.1.0
 social-auth-core==1.5.0   # via social-auth-app-django
 sockjs-tornado==1.0.3
 sourcemap==0.2.1
-sqlalchemy==1.1.14
+sqlalchemy==1.2.4
 statsd==3.2.1             # via django-statsd-mozilla
 stripe==1.77.2
 tornado==4.5.3

zerver/tests/test_narrow.py

@@ -221,11 +221,7 @@ class NarrowBuilderTest(ZulipTestCase):
     def test_add_term_using_group_pm_operator_and_not_the_same_user_as_operand(self) -> None:
         # Test wtihout any such group PM threads existing
         term = dict(operator='group-pm-with', operand=self.example_email("othello"))
-        with mock.patch("sqlalchemy.util.warn") as mock_warn:
-            self._do_add_term_test(term, 'WHERE recipient_id != recipient_id')
-
-            # SQLalchemy warns because this query is a tautology.
-            mock_warn.assert_called_once()
+        self._do_add_term_test(term, 'WHERE 1 != 1')
 
         # Test with at least one such group PM thread existing
         self.send_huddle_message(self.user_profile.email, [self.example_email("othello"),
@@ -237,7 +233,7 @@ class NarrowBuilderTest(ZulipTestCase):
     def test_add_term_using_group_pm_operator_not_the_same_user_as_operand_and_negated(
             self) -> None:  # NEGATED
         term = dict(operator='group-pm-with', operand=self.example_email("othello"), negated=True)
-        self._do_add_term_test(term, 'WHERE recipient_id = recipient_id')
+        self._do_add_term_test(term, 'WHERE 1 = 1')
 
     def test_add_term_using_group_pm_operator_with_non_existing_user_as_operand(self) -> None:
         term = dict(operator='group-pm-with', operand='non-existing@zulip.com')