chore: remove act jobs #604
Description
The Makefile jobs act-test-and-lint, act-integration-test, and act-system-test are in a broken state since we externalised our jobs to syntasso/ci/.github/workflows/test-kratix.yaml.
As workflows included with uses can be executed only as a full unit, there is no way to execute the tests independently as before. Running the workflow as a single unit takes a long time, though, and it also removes local environments after runs. This negates most of the benefits of using act to execute individual CI jobs locally.
We should remove the act-* tasks from our Makefile to avoid leaving unused and broken code in our builds.