API error: update epic with useless column(group_id)

Summary

update issue with useless columns is fine, but update epic with group_id failed.

https://docs.gitlab.com/ee/api/epics.html#update-epic

Steps to reproduce

curl -X PUT -H "Authorization: Bearer xxx" \
	-H "Content-Type: application/json" \
	-d '{"id":5186,"iid":1,"group_id":49498,"title":"foo","state":"opened","web_url":"https://jihulab.com/groups/premium-plan/demo/-/epics/1"}' \
	"https://jihulab.com/api/v4/groups/49498/epics/1"

What is the current bug behavior?

update epic with group_id failed

What is the expected correct behavior?

ignore useless columns

Relevant logs and/or screenshots

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    <p>Request ID: <code>01GEHHM9241W4ZJJMRK36KNBZP</code></p>
    <p>Try refreshing the page, or going back and attempting the action again.</p>