feat: update exportData method with improved type annotations

- Refined `exportData` method to use `Record<string, unknown>` for more precise type safety.

frontend/src/services/user.service.ts

@@ -61,8 +61,8 @@ export const UserService = {
 		return data;
 	},
 
-	async exportData(): Promise<any> {
-		const { data } = await api.get("/users/me/export");
+	async exportData(): Promise<Record<string, unknown>> {
+		const { data } = await api.get<Record<string, unknown>>("/users/me/export");
 		return data;
 	},
 };