fix: use json as it is just better than string for huge amount of logs

database/migrations/2025_01_15_130416_create_docker_cleanup_executions_table.php

@@ -16,7 +16,7 @@ public function up(): void
             $table->string('uuid')->unique();
             $table->enum('status', ['success', 'failed', 'running'])->default('running');
             $table->text('message')->nullable();
-            $table->text('cleanup_details')->nullable();
+            $table->json('cleanup_log')->nullable();
             $table->foreignId('server_id');
             $table->timestamps();
         });