chore: remove package lock file

[cschetan77]

Description

This change removes the lock file from the repository.

Lock files are typically used to guarantee deterministic CI environments. However, for libraries, maintaining a lock file can cause CI to run against a fixed set of dependencies that may differ from what users actually install.

For example, consider a dependency X that releases a new patch version which unintentionally breaks our SDK.

With a lock file: Our CI continues to pass because it uses the locked dependency versions, but users installing the SDK may receive the newer version and encounter issues.

Without a lock file: CI installs the latest compatible dependencies, allowing us to detect such issues early (assuming relevant tests exist).

Removing the lock file helps ensure our CI environment better reflects the dependency versions our users will receive.

Checklist

• I have added documentation for new/changed functionality in this PR or in auth0.com/docs
• All active GitHub checks for tests, formatting, and security are passing
• The correct base branch is being used, if not the default branch