Customisation of NPM Dependencies

Summary:

Allow users to customise or override the NPM dependencies within the Checkly runtime environment.

Description:

Currently, users are restricted to a set list of packages and versions in the Checkly runtime, which may not cover all the specific use cases or compatibility issues they encounter. As a Checkly user, I need to be able to dynamically use packages in my own runtime. I process dependency updates in projects regularly to use the latest versions for new features and security updates.