fix: upgrade @encointer/util from 0.14.0 to 0.18.2

Snyk has created this PR to upgrade @encointer/util from 0.14.0 to 0.18.2.

See this package in npm:
@encointer/util

See this project in Snyk:
https://app.snyk.io/org/samaradel/project/f58e7d35-ee85-42d7-ba59-4d42cad0b7d4?utm_source=github&utm_medium=referral&page=upgrade-pr

Author: snyk-bot