Prerequisites

• bump reva Bump reva 2.40.3 #2275

QA Phase

• confirmatory testing
• run api tests localy - ✅️
• run all working tests in CI

Collected bugs

After QA Phase

• bump version in pkg/version.go Bump reva 2.40.3 #2275
• squash and merge Release PR 🎉 Release 4.0.3 #2281
• publish release notes to the docs publish release note rolling-5.0.2, production-4.0.2 and 4.0.3  docs#646
• add release notes from web and reva to opencloud if needed
• Update the public matrix channel topic @micbar
• update https://update.opencloud.eu/server.json @ScharfViktor