MM-57913 Increase maximum length of Preferences.Value column (#27297)

* MM-57913 Increase maximum length of Preferences.Value column

* Add missing column name to migration

* Lowercased table and column names

server/channels/db/migrations/postgres/000122_preferences_value_length.down.sql

@@ -0,0 +1 @@
+ALTER TABLE Preferences ALTER COLUMN Value TYPE VARCHAR(2000);

server/channels/db/migrations/postgres/000122_preferences_value_length.up.sql

@@ -0,0 +1 @@
+ALTER TABLE preferences ALTER COLUMN value TYPE text;