Summary of the contribution

This changes the zkg.meta version to main.

Testing

./docker/run_end_to_end.sh and ensure it works.

[X] Confirm that any associated issues are indicated in the pull request title
[X] Rebase your PR against the latest commit within the target branch
[X] Include steps to verify and test the intended change
[X] Write or update unit tests and/or integration tests to verify your changes
[X] Verify the basic functionality of the plugin by building and running locally via the end to end testing script
[X] Run shellcheck against any new or updated shell scripts, indicating the reasoning behind any disabled checks
[X] Indicate whether or not this is a breaking change
[X] Ensure that any new dependencies are these dependencies licensed in a way that is compatible for inclusion under ASF 2.0