Upgrade OAuth2 Proxy to chart version 7.7.2 and app version 7.6.0

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 7.5.0
Helm Chart 7.5.1
Helm Chart 7.5.2
Helm Chart 7.5.3
Helm Chart 7.5.4
Helm Chart 7.5.5
Helm Chart 7.6.0
Helm Chart 7.6.1
Helm Chart 7.6.2
Helm Chart 7.6.3
Helm Chart 7.7.0
Helm Chart 7.7.1
Helm Chart 7.7.2