Version 4.3.1
Included changes:
- BUILD: Added 'submodule-trigger.yml' pipeline to support automated release process.
- BUILD: Added a step to 'build-and-test.yml' pipeline to auto complete a pull request to main as part of the automated release process.
- BUILD: Changed nightly build to just run tests, not create packages.
- BUG: Fixed nul error when data does not contain element specified.