Update Dashboard Oauth Proxy resources in Manifests

Description of problem:

This is a follow up issue for RHODS-6447, the changes to update the oauth-proxy container resources should be reflected in `odh-manifests` repo.

Prerequisites (if any, like setup, operators/versions):

Steps to Reproduce

1. Deploy RHODS instance
2. Under rhods-dashboard, deployment verify resources for `oauth-proxy` container

Actual results:

      resources:
        limits:
          cpu: 100m
          memory: 256Mi
        requests:
          cpu: 100m
          memory: 256Mi 

Expected results:

      resources:
        limits:
          cpu: 1000m
          memory: 2Gi
        requests:
          cpu: 500m
          memory: 1Gi 

Reproducibility (Always/Intermittent/Only Once):

Build Details:

Workaround:

Additional info: