use a token-enabled proxy to support anonymous opensearch dashboard

[cthtrifork]

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[github-actions]

🦙 MegaLinter status: ⚠️ WARNING

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
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✅ JSON	v8r	3		0	2.09s
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✅ REPOSITORY	grype	yes		no	12.42s
✅ REPOSITORY	trivy	yes		no	5.18s
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✅ YAML	v8r	17		0	5.44s
⚠️ YAML	yamllint	17		1	0.35s

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