[pgadmin4] namespace name need to quote to support numeric named namespace

[miteshpatelfxt]

Describe the bug
A clear and concise description of what the bug is.

Version of Helm and Kubernetes:

Which chart:
pgadmin4

What happened:
we use numeric namespace name
getting this error.

json: cannot unmarshal number into Go struct field ObjectMeta.metadata.namespace of type string.

What you expected to happen:

How to reproduce it (as minimally and precisely as possible):

Anything else we need to know:
Thank you.
I tested it locally, just need to add "| quote" in the pgadmin.namespaceName helper function

{{/*
Create the name of the namespace
*/}}
{{- define "pgadmin.namespaceName" -}}
{{- default .Release.Namespace .Values.namespace | quote }}
{{- end }}