nodeSelector rendering produces invalid YAML

[monrax]

From https://github.com/tigerpeng2001/graylog-helm/blob/main/evaluation.txt

Graylog and DataNode StatefulSets render nodeSelector as a Go map string (e.g., map[kubernetes:map[io/os:linux]]) instead of a YAML map.

graylog-helm/charts/graylog/templates/workload/statefulsets/datanode.yaml

Lines 48 to 50 in 5ffb072

	{{- if .Values.datanode.nodeSelector }}
	nodeSelector: {{ .Values.datanode.nodeSelector }}
	{{- end }}

graylog-helm/charts/graylog/templates/workload/statefulsets/graylog.yaml

Lines 49 to 51 in 5ffb072

	{{- if .Values.graylog.nodeSelector }}
	nodeSelector: {{ .Values.graylog.nodeSelector }}
	{{- end }}

How to reproduce?

helm template graylog ./charts/graylog --set graylog.nodeSelector.kubernetes.os=linux --set datanode.nodeSelector.kubernetes.os=linux | grep "nodeSelector"

Should output

nodeSelector: map[kubernetes:map[os:linux]]
nodeSelector: map[kubernetes:map[os:linux]]