Update dependency org.testng:testng to v7

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This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
org.testng:testng (source)	7.6.1 -> 7.7.0

By merging this PR, the below issues will be automatically resolved and closed:

Severity	CVSS Score	CVE	GitHub Issue
High	7.8	CVE-2022-4065	#478

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