chore: import upstream snapshot with attribution

bootstrap/sql/migrations/native/1.4.6/postgres/postDataMigrationSQLScript.sql

@@ -0,0 +1,43 @@
+-- Remove Duplicate UserNames and lowercase them
+WITH cte AS (
+    SELECT 
+        id,
+        ROW_NUMBER() OVER (PARTITION BY to_jsonb(LOWER(json->>'name')) ORDER BY id) as rn
+    FROM 
+        user_entity
+)
+DELETE from user_entity
+WHERE id IN (
+    SELECT id
+    FROM cte
+    WHERE rn > 1
+);
+
+UPDATE user_entity
+SET json = jsonb_set(
+    json,
+    '{name}',
+    to_jsonb(LOWER(json->>'name'))
+);
+
+-- Remove Duplicate Emails and lowercase them
+WITH cte AS (
+    SELECT 
+        id,
+        ROW_NUMBER() OVER (PARTITION BY to_jsonb(LOWER(json->>'email')) ORDER BY id) as rn
+    FROM 
+        user_entity
+)
+DELETE from user_entity
+WHERE id IN (
+    SELECT id
+    FROM cte
+    WHERE rn > 1
+);
+
+UPDATE user_entity
+SET json = jsonb_set(
+    json,
+    '{email}',
+    to_jsonb(LOWER(json->>'email'))
+);