Fix PEP8 issues with latest pycodestyle (#6636)

web/pgadmin/browser/server_groups/servers/databases/subscriptions/__init__.py

@@ -914,7 +914,7 @@ class SubscriptionView(PGChildNodeView, SchemaDiffObjectCompare):
         drop_sql = kwargs.get('drop_sql', False)
 
         if data:
-            if 'pub' in data and type(data['pub']) == str:
+            if 'pub' in data and isinstance(data['pub'], str):
                 # Convert publication details to list
                 data['pub'] = data['pub'].split(',,')
             sql, name = self.get_sql(data=data, subid=oid)

web/pgadmin/browser/server_groups/servers/pgagent/__init__.py

@@ -598,7 +598,7 @@ SELECT EXISTS(
         """
         # Format the schedule data. Convert the boolean array
         jschedules = data.get('jschedules', {})
-        if type(jschedules) == dict:
+        if isinstance(jschedules, dict):
             for schedule in jschedules.get('added', []):
                 format_schedule_data(schedule)
             for schedule in jschedules.get('changed', []):
@@ -606,7 +606,7 @@ SELECT EXISTS(
 
         has_connection_str = self.manager.db_info['pgAgent']['has_connstr']
         jssteps = data.get('jsteps', {})
-        if type(jssteps) == dict:
+        if isinstance(jssteps, dict):
             for changed_step in jssteps.get('changed', []):
                 status, res = format_step_data(
                     data['jobid'], changed_step, has_connection_str,