Function refreshHandler

refreshHandler(
    event: APIGatewayProxyEventV2,
): Promise<
    {
        body: string;
        headers: {
            "access-control-allow-headers": string;
            "access-control-allow-methods": string;
            "access-control-allow-origin": string;
            "content-type": string;
        };
        statusCode: number;
    },
>
Refresh Cognito tokens using a refresh token.
Parameters
- event: APIGatewayProxyEventV2
Returns Promise<
    {
        body: string;
        headers: {
            "access-control-allow-headers": string;
            "access-control-allow-methods": string;
            "access-control-allow-origin": string;
            "content-type": string;
        };
        statusCode: number;
    },
>
- Defined in backend/src/handlers/auth.ts:134