[Bug] Percy snapshot test is not works on PR that created by dependabot

[filzrev]

Describe the bug
PR(#10242) changes workflow trigger from pull_request_target to pull_request for security reasons.

It blocks percy snapshot test for PR that is created from forked repository.

But it seems also blocking PR that is created by dependabot.
And following logs are reported on CI logs

Related CI logs

[percy] Unable to analyze error logs
[percy] Skipping visual tests
[percy] Error: Missing Percy token

Expected behavior
PR that created by dependabot is automatically accepted and merged.