remove pytz remnants

app/job/rest.py

@@ -226,7 +226,7 @@ def get_scheduled_job_stats(service_id):
         jsonify(
             count=count,
             soonest_scheduled_for=(
-                soonest_scheduled_for.replace(tzinfo=ZoneInfo.UTC).isoformat()
+                soonest_scheduled_for.replace(tzinfo=ZoneInfo("UTC")).isoformat()
                 if soonest_scheduled_for
                 else None
             ),

notifications_utils/timezones.py

@@ -12,5 +12,5 @@ def utc_string_to_aware_gmt_datetime(date):
     Returns an aware local datetime, essentially the time you'd see on your clock
     """
     date = parser.parse(date)
-    forced_utc = date.replace(tzinfo=ZoneInfo.UTC)
+    forced_utc = date.replace(tzinfo=ZoneInfo("UTC"))
     return forced_utc.astimezone(local_timezone)

tests/app/conftest.py

@@ -988,4 +988,4 @@ def admin_request(client):
 
 
 def datetime_in_past(days=0, seconds=0):
-    return datetime.now(tz=ZoneInfo.UTC) - timedelta(days=days, seconds=seconds)
+    return datetime.now(tz=ZoneInfo("UTC")) - timedelta(days=days, seconds=seconds)

tests/app/job/test_rest.py

@@ -183,7 +183,7 @@ def test_create_scheduled_job(client, sample_template, mocker, fake_uuid):
     assert resp_json["data"]["id"] == fake_uuid
     assert (
         resp_json["data"]["scheduled_for"]
-        == datetime(2016, 1, 5, 11, 59, 0, tzinfo=ZoneInfo.UTC).isoformat()
+        == datetime(2016, 1, 5, 11, 59, 0, tzinfo=ZoneInfo("UTC")).isoformat()
     )
     assert resp_json["data"]["job_status"] == JobStatus.SCHEDULED
     assert resp_json["data"]["template"] == str(sample_template.id)