GHSA-gq3j-xvxp-8hrf: Hono added timing comparison hardening in basicAuth and bearerAuth

The basicAuth and bearerAuth middlewares previously used a comparison that was not fully timing-safe.

The timingSafeEqual function used normal string equality (===) when comparing hash values. This comparison may stop early if values differ, which can theoretically cause small timing differences.

The implementation has been updated to use a safer comparison method.