chore: drop default value after migration in the changelog (#100)

Author: porcellus

CHANGELOG.md

@@ -15,14 +15,20 @@ to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 ### Migration
 
 - If using `access_token_signing_key_dynamic` false in the core:
-  - `ALTER TABLE session_info ADD COLUMN use_static_key BOOLEAN NOT NULL DEFAULT(true);`
+  - ```sql
+    ALTER TABLE session_info ADD COLUMN use_static_key BOOLEAN NOT NULL DEFAULT(true);
+    ALTER TABLE session_info ALTER COLUMN use_static_key DROP DEFAULT;
+    ```
   - ```sql
     INSERT INTO jwt_signing_keys(key_id, key_string, algorithm, created_at)
       select CONCAT('s-', created_at_time) as key_id, value as key_string, 'RS256' as algorithm, created_at_time as created_at
       from session_access_token_signing_keys;
     ```
 - If using `access_token_signing_key_dynamic` true (or not set) in the core:
-  - `ALTER TABLE session_info ADD COLUMN use_static_key BOOLEAN NOT NULL DEFAULT(false);`
+  - ```sql
+    ALTER TABLE session_info ADD COLUMN use_static_key BOOLEAN NOT NULL DEFAULT(false);
+    ALTER TABLE session_info ALTER COLUMN use_static_key DROP DEFAULT;
+    ```
 
 ## [2.4.0] - 2023-03-30