Update package package-json to remove vulnerability from got package

[mkszepp]

The package-json package on this addon is outdated and should be updated.

package-json v6 brings as dependency got v9 which has a vulnerability.

Updating the version package-json to v8 or newer removes in any addon which is using ember-try this vulnerability.
This update will be braking, because package-json has dropped node version (< v18)

See:
GHSA-pfrx-2q88-qq97