Update TinkerPop to 3.7.3 [tp-tests][cql-tests]

[porunov]

---

Thank you for contributing to JanusGraph!

In order to streamline the review of the contribution we ask you
to ensure the following steps have been taken:

For all changes:

• Is there an issue associated with this PR? Is it referenced in the commit message?
• Does your PR body contain #xyz where xyz is the issue number you are trying to resolve?
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[janusgraph-automations]

💔 All backports failed

Status	Branch	Result
❌	v1.0	Backport failed because of merge conflicts

Manual backport

To create the backport manually run:

backport --pr 4707

Questions ?

Please refer to the Backport tool documentation and see the Github Action logs for details