[sync] Update embedded LibDB from standalone

Author: ImperaZim

src/imperazim/db/Mysql.php

@@ -17,7 +17,7 @@
 * All table/column names are sanitized with backtick quoting.
 * Values are always bound via prepared statements.
 */
-final class Mysql extends Database {
+final class Mysql implements Database {
 
     public function __construct(private mysqli $connection) {}
 

src/imperazim/db/Sqlite3.php

@@ -17,7 +17,7 @@
 * All table/column names are sanitized with backtick quoting.
 * Values are always bound via prepared statements.
 */
-final class Sqlite3 extends Database {
+final class Sqlite3 implements Database {
 
     private PDO $sqlite;