Adyen Payment 4.0.0-RC1

What's Changed

Breaking Changes 🛠

• Support Shopware 6.6 by @candemiralp in #474

New Features 💎

• [ECP-9087] Make HMAC validation optional by @candemiralp in #475

Fixes ⛑️

• [ECP-9027] Use autowire on service definitions by @candemiralp in #471
• [ECP-9198] Update duplicated CSS classes in the components by @candemiralp in #494

Other Changes 🖇️

• [ECP-9149] Remove deprecated classes of Shopware by @candemiralp in #495
• [ECP-9049] Fix fetching redeemed gift cards on cart load by @candemiralp in #496
• [ECP-8954] Automate the Shopware Marketplace zip file creation as release asset by @SushmitaThakur in #501

Current checkout api version: v71
Current checkout component version: v5.63.0

Full Changelog: 3.15.0...4.0.0-rc1