[Snyk] Security upgrade org.testng:testng from 6.14.3 to 7.7.0

[BewareMyPower]

This PR was automatically created by Snyk using the credentials of a real user.

Snyk has created this PR to fix one or more vulnerable packages in the `maven` dependencies of this project.

Changes included in this PR

• Changes to the following files to upgrade the vulnerable dependencies to a fixed version:
  • pom.xml

Vulnerabilities that will be fixed

With an upgrade:

Severity	Priority Score (*)	Issue	Upgrade	Breaking Change	Exploit Maturity
	539/1000 Why? Has a fix available, CVSS 6.5	Arbitrary File Write via Archive Extraction (Zip Slip) SNYK-JAVA-ORGTESTNG-3040285	org.testng:testng: 6.14.3 -> 7.7.0	Yes	No Known Exploit

(*) Note that the real score may have changed since the PR was raised.

Check the changes in this PR to ensure they won't cause issues with your project.

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[github-actions]

@BewareMyPower:Thanks for your contribution. For this PR, do we need to update docs?
(The PR template contains info about doc, which helps others know more about the changes. Can you provide doc-related info in this and future PR descriptions? Thanks)