oauth for api + upgrade to 0.65.0

[cedricve]

Pull Request Title: oauth for api + upgrade to 0.65.0

Description:

Motivation:

The primary motivation for this pull request is to upgrade the project to version 0.65.0 and streamline the OAuth2 proxy configuration for the API. By doing so, we aim to enhance the security and maintainability of the project.

Changes:

1. Version Upgrade:

   • Updated the chart version from 0.64.0 to 0.65.0 in charts/hub/Chart.yaml.

2. Simplified OAuth2 Configuration:

   • Removed redundant OAuth2 proxy ingress configurations from charts/hub/templates/kerberos-hub/hub-frontend-demo.yaml and charts/hub/templates/kerberos-hub/hub-frontend.yaml.
   • Eliminated unnecessary annotations related to OAuth2 proxy in the frontend ingress configurations.

Benefits:

• Security Enhancement: Streamlining the OAuth2 proxy configuration reduces potential misconfigurations and security vulnerabilities.
• Maintainability: Simplifying the ingress configurations makes the codebase easier to understand and maintain.
• Consistency: Ensuring consistent and minimal configuration across different environments.

Overall, these changes contribute to a more secure, maintainable, and consistent project setup.