Upgrade OAuth2 Proxy to chart version 7.7.23 and app version 7.7.0

No problems deploying to Proxmox VE K3s Kubernetes cluster via Helm Chart and Flux V2 reconciliation in a GitOps approach.

Application v7.6.0
Helm Chart 7.7.22
Application v7.7.0
Helm Chart 7.7.23