.Values.global.certificate_authority mount is ignored without additional postRenderer

Fix introduced from issue #59 (closed) via !110 (merged) appears incomplete. It adds a mount to /etc/pki/tls/certs/oidc-ca.crt if .Values.global.certificate_authority is populated, but by itself this accomplishes nothing as the default trust still references /etc/pki/tls/certs/ca-bundle.crt. Current workaround is to add an env var SSL_CERT_FILE via postRenderer to reference the new trust location:

authservice:
  postRenderers:
    - kustomize:
        patchesStrategicMerge:
          - apiVersion: apps/v1
            kind: Deployment
            metadata:
              name: authservice
              namespace: authservice
            spec:
              template:
                spec:
                  containers:
                    - name: authservice
                      env:
                        - name: "SSL_CERT_FILE"
                          value: "/etc/pki/tls/certs/oidc-ca.crt"