ipv6 support

[alexminder]

Preflight Checklist

• I agree to follow the Code of Conduct that this project adheres to.
• I have searched the issue tracker for an issue that matches the one I want to file, without success.

Problem Description

Below deployment part where listen addresses are hardcoded and ipv4 only. With ipv6 only kubernetes cluster dex fail to work properly.

          args:
            - dex
            - serve
            - --web-http-addr
            - 0.0.0.0:5556
            {{- if .Values.https.enabled }}
            - --web-https-addr
            - 0.0.0.0:5554
            {{- end }}
            {{- if .Values.grpc.enabled }}
            - --grpc-addr
            - 0.0.0.0:5557
            {{- end }}
            - --telemetry-addr
            - 0.0.0.0:5558

Proposed Solution

Add multiple addresses if possible:

• 0.0.0.0
• [::]

Or add chart value for listen address.

Alternatives Considered

No response

Additional Information

No response