Fix JFrog servers configurations cleanup

[EyalDelarea]

• All tests passed. If this feature is not already covered by the tests, I added new tests.
• I used npm run format for formatting the code before submitting the pull request.

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PR Description:

This PR updates the JFrog server cleanup function to improve its behavior in certain scenarios:

• When a custom server ID is set, the cleanup will only remove the configuration for that specific server.
• If no custom server ID is specified, the cleanup will remove all configured servers.

This change addresses cases where multiple setup-jfrog-cli jobs are executed by the same agent, potentially causing server configurations to be deleted while they are still in use by other tasks. To avoid this issue, it is recommended to use a custom server ID.

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